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OPTICAL FREQUENCY CONVERTER

Subclass of:

359 - Optical: systems and elements

Patent class list (only not empty are listed)

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Class / Patent application numberDescriptionNumber of patent applications / Date published
359328000 Harmonic generator 72
359330000 Parametric oscillator 37
359332000 Dielectric optical waveguide type 14
359327000 Raman type 9
Entries
DocumentTitleDate
20080259437TUNABLE LIGHT SOURCE APPARATUS, AND ADJUSTMENT METHOD AND CONTROL PROGRAM OF THE SAME - The present invention aims to provide a tuning light source apparatus including a multiple-optical resonator, where the resonance frequencies of the respective optical resonators in a multiple-optical resonator are exactly coincided with the set frequency, and the frequency of the output laser beam is locked within a range of about 1 GHz from the set frequency. Current is flowed to TO phase shifters based on lights detected by light receiving elements, and the resonance wavelengths of resonators are adjusted in an aim of obtaining a state in which an intensity of an oscillation light becomes a maximum and at the same time an intensity of a light from a through port becomes a minimum.10-23-2008
20080259436Laser light source device, illumination device, image display device, and monitor - A laser light source device includes: a light source; an external resonator constituting a resonator structure with the light source; a wavelength conversion element disposed between the light source and the external resonator, and converting the wavelength of the light emitted from the light source; and a first spacing member maintaining a state in which at least the wavelength conversion element is separated from the external resonator by a predetermined distance.10-23-2008
20110194171OPTICAL WAVELENGTH CONVERSION ELEMENT, WAVELENGTH CONVERSION LASER DEVICE, AND IMAGE DISPLAY DEVICE - An optical wavelength conversion element includes: a wavelength conversion waveguide that has a periodic polarization reversal structure having alternately and cyclically formed domains of which polarization directions are inverted, that guides light as a fundamental wave corresponding to the periodic polarization reversal structure, and performs a wavelength conversion of the guided fundamental wave; a first clad that is made of a dielectric having a refractive index lower than that of the wavelength conversion waveguide and is provided in contact with the domains; a second clad that is made of a dielectric having a refractive index lower than that of the wavelength conversion waveguide and is provided in contact with the domains such that the second clad is opposed to the first clad film; a first conducting unit that electrically connects the domains in parallel via the first clad; and a second conducting unit that electrically connects the domains in parallel via the second clad.08-11-2011
20090257114WAVELENGTH-CONVERTED LIGHT GENERATING APPARATUS AND GENERATING METHOD - A wavelength-converted light generating apparatus 10-15-2009
20100073761WAVELENGTH CONVERSION DEVICE PACKAGE - A nonlinear optical device is provided. More specifically, a wavelength conversion device package with less optical loss stabilizes optical alignment under an external environmental change, for example, in a temperature variation by providing a temperature regulating block and a temperature sensor to an optical oscillator and a wavelength modulator and fixing a flexible optical transmitter to the optical oscillator and the wavelength modulator.03-25-2010
20100103504NANO-ANTENNA ENHANCED IR UP-CONVERSION MATERIALS - Robust composite materials containing nanoscale antennae for molecules are used in the up-conversion process. Antennae can be used to locally enhance the electric fields near an upconverting phosphor or material to enhance both absorption of energy, such as with a television or radio receiver, and emission of energy, such as by the transmitter at the radio station.04-29-2010
20130088770SPECTRAL WIDTH NARROWING METHOD, OPTICAL ELEMENT AND LIGHT SOURCE DEVICE - The present invention provides a method for narrowing a spectral width that can also be adapted to an ultrashort optical pulse emitted from a wavelength tunable light source, and that can provide an output optical pulse with a narrow spectral width and a low noise component, and an optical element and a light source device that use the method for narrowing a spectral width. The method includes using an optical waveguide member (04-11-2013
20090303573Optical antenna with phase control - An optical antenna assembly including multiple optical antenna elements, each of the optical antenna elements are arranged in a regular pattern and carried by a supporting body. The regular pattern of the plurality of optical antenna elements is nonuniform. Certain ones of the optical antenna elements are configured to respond to the one or more waves of light.12-10-2009
20120218624HIGH-POWER WHITE LEDS - A light emitting apparatus has a radiation source for emitting short wavelength radiation. A down conversion material receives and down converts at least some of the short wavelength radiation emitted by the radiation source and back transfers a portion of the received and down converted radiation. An optic device adjacent the down conversion material at least partially surrounds the radiation source. The optic device is configured to extract at least some of the back transferred radiation. A sealant substantially seals a space between the radiation source and the optic device.08-30-2012
20110013264QUASI NON-CRITICAL PHASE MATCHED AND CONTRA-PHASE MATCHED STRUCTURES - Adhesive-free bond non-linear optical (NLO) components, devices and systems including one or more engineered quasi non-critical phase matched or contra-phase matched NLO crystal doublets. Such systems and devices advantageously increase the efficiency of NLO frequency conversion and improve beam quality. Devices are applicable to any uniaxial and biaxial NLO crystals in a wide range of wavelengths, e.g., from far ultraviolet to visible to far infrared. Devices employing engineered AFB NLO components according to certain embodiments include any conventional frequency converting architectures. Systems and methods are also provided to unambiguously determine and correct walk-off for any arbitrary uniaxial and biaxial crystal orientation.01-20-2011
20110013263MEDIUM FOR PHOTON ENERGY UP-CONVERSION - The present invention relates to a medium for photon energy up-conversion, a photon-energy up-conversion device comprising said medium and to uses of said medium. The present invention also relates to a method of photon energy up-conversion using said medium or said device.01-20-2011
20130063807UP -CONVERSION OF ELECTROMAGNETIC RADIATION WITHIN A WAVELENGTH RANGE - Prior art techniques for converting the wavelength of electromagnetic radiation by non-linear interactions such as sum frequency generation SFG produces blurred images when applied to polychromatic images. The invention provides an improved arrangement (03-14-2013
20130163071METHOD AND APPARATUS FOR GENERATION AND DETECTION OF ROGUE WAVES - Methods and systems are provided for generation and detection of rogue waves, including hydrodynamic rogue waves and optical rogue waves. A method for generating an optical rogue wave comprises the steps of generating an input pulse into a nonlinear optical medium, and perturbing the input pulse by directing a narrow-band seed radiation into the input pulse. The seed radiation has a frequency and timing to generate broadband radiation within the nonlinear optical medium.06-27-2013
20130163070PARAMETRIC GENERATOR - A method of optimizing parametric gain in a nonlinear optical crystal that in response to application of a pump beam generates through a parametric generation process signal and idler beams, wherein the signal beam is non-collinear with the pump beam and the signal beam is subject to absorption due to the nonlinear material, the method involving shaping the pump beam to have an elliptical cross section, wherein the method further involves determining the width w of the pump beam depending on the absorption co-efficient of the optical crystal.06-27-2013
20090237777ENGINEERED NONLINEAR OPTICAL CRYSTAL COMPOSITES FOR FREQUENCY CONVERSION - Walk-off corrected (WOC) non-linear optical (NLO) components, devices and systems including one or more engineered WOC NLO crystal doublets. Such systems and devices advantageously increase the efficiency of an OPO operation. Devices are applicable to any uniaxial and biaxial NLO crystals in a wide range of wavelengths, e.g., from far ultraviolet to visible to far infrared. Devices employing engineered WOC NLO components according to embodiments of the present invention include any conventional frequency converting architectures. Systems and methods are also provided to unambiguously determine and correct walk-off for any arbitrary uniaxial and biaxial crystal orientation. The correct crystal orientation is also experimentally confirmed. This allows the use of WOC crystal doublet assemblies for a wide range of wavelengths and NLO crystals that until now have not been used because of low efficiency due to walk-off and inability of readily correcting walk-off.09-24-2009
20130188240IR FIBER BROADBAND MID-IR LIGHT SOURCE - A method of generating a supercontinuum in chalcogenide fiber with a pump light comprising a short pulse fiber laser or diode laser operating with a wavelength of 07-25-2013
20100172018DEEP BLUE EXTENDED SUPER CONTINUUM LIGHT SOURCE - A new deep blue extended super continuum light source is provided wherein said super continuum at least extends to a low wavelength border λ07-08-2010
20110128612WAVELENGTH CONVERSION ELEMENT - In a wavelength conversion element in which a periodic poled crystal that converts an input laser light into a laser light of a predetermined wavelength is provided on a thick-film resistance substrate including a heating unit, a heat spreader having a predetermined thermal conductivity, which equalizes a temperature distribution of the periodic poled crystal, is provided between the thick-film resistance substrate and the periodic poled crystal, and the thick-film resistance substrate and the heat spreader, and the heat spreader and the periodic poled crystal are adhered by an adhesive member having a predetermined thermal conductivity.06-02-2011
20110128611WHITE LIGHT SOURCE WITH CRYSTAL FIBER AND METHOD FOR COLOR TEMPERATURE TUNING THEREOF - The present invention relates to a white light source, and particularly to a white light source with crystal fiber and a method for color temperature tuning thereof. The white light source of the present invention comprises a pumping source for providing a first-color light, and a gradient index lens for coupling the first-color light into a crystal fiber. The crystal fiber absorbs a portion of the first-color light and generates a second-color light and a third-color light, and a white light with high color rendering index can be obtained. The crystal fiber is made of a first rare earth element oxide and a second rare earth element oxide co-doped yttrium aluminum garnet. The color temperature of the white light can be tuned by adjusting the position of the focus of the pumping light on the end section of the crystal fiber.06-02-2011
20110032597 ELECTRIC FIELD POLING OF FERROELECTRIC MATERIALS - A method of inducing a periodic variation of nonlinearity value in a sample of ferroelectric material comprises arranging a pair of electrodes on opposite faces of the sample, one electrode defining a desired pattern of nonlinearity variation, applying a pre-bias voltage across the sample for a predetermined time using the electrodes, the pre-bias voltage being less than the coercive field of the ferroelectric material; and after the predetermined time, applying a current-controlled poling voltage across the sample using the electrodes, to produce domain inversion in the sample according to the desired pattern of nonlinearity variation. The pre-bias voltage may be 75% of the coercive field or more, and applied for a pre-determined time between 1 and 100 seconds.02-10-2011
20090207480WAVELENGTH CONVERTING APPARATUS - A wavelength converting apparatus that improves output performance of laser light subjected to wavelength conversion while improving the efficiency of laser light wavelength conversion. Wavelength converting apparatus (08-20-2009
20130135710WAVELENGTH CONVERSION DEVICE AND LASER DEVICE - The present invention relates to a wavelength conversion device and others. The wavelength conversion device is provided with an input port, a beam homogenizer, a wavefront aberration compensating element, and a nonlinear conversion element of a nonlinear optical crystal. The beam homogenizer forms a flat-top light intensity distribution of an output laser beam at a position different from a beam waist position thereof. Thereafter, the wavefront aberration compensating element outputs the laser beam coming from the beam homogenizer, as a phase-aligned collimated beam to the wavelength conversion element.05-30-2013
20100033806Wavelength Converter Manufacturing Method and Wavelength Converter - Affords a wavelength converter manufacturing method and a wavelength converter whereby the transmissivity can be improved. A method of manufacturing a wavelength converter (02-11-2010
20110170172WAVELENGTH CONVERSION LASER DEVICE AND IMAGE DISPLAY DEVICE USING THE SAME - A wavelength conversion laser device includes a laser light source which emits a laser beam, two reflective surfaces which reflect therefrom a laser beam, a wavelength converter provided between the two reflective surfaces, which converts a laser beam into a wavelength-converted laser beam, and condensing optics which condense the laser beams to be injected between the two reflective surfaces, wherein at least one of the two reflective surfaces has a curvature for reflecting a laser beam to be re-injected into the wavelength converter between the two reflective surfaces repeatedly while forming multi paths of laser beams injected into the wavelength converter at different incident angles, and the condensing optics are arranged to disperse beam waists of the laser beams in the wavelength converter, which reciprocate between the two reflective surfaces.07-14-2011
20100128343WAVELENGTH CONVERSION LIGHT SOURCE APPARATUS AND WAVELENGTH CONVERSION METHOD - A wavelength conversion light source apparatus includes a fundamental wave light source configured to emit a fundamental wave, a nonlinear crystal configured to convert a wavelength of the fundamental wave by being irradiated with the fundamental wave and making the fundamental wave pass therethrough, and a movement unit configured to place the nonlinear crystal thereon and continuously move the nonlinear crystal within a plane, where a phase matching condition is not violated, so that a passage path of the fundamental wave passing through the nonlinear crystal is changed.05-27-2010
20100226001WAVELENGTH CONVERSION DEVICES AND A METHOD OF PRODUCING THE SAME - A wavelength conversion device 09-09-2010
20090244694LIGHT SOURCE DEVICE AND PROJECTOR - A light source device includes: a first light source unit and a second light source unit emitting light; and a wavelength conversion element converting wavelengths of lights emitted from the first light source unit and from the second light source unit. Chief ray of light emitted from the first light source unit and transmitted through the wavelength conversion element is not parallel with chief ray of light emitted from the second light source unit and transmitted through the wavelength conversion element.10-01-2009
20110026103CRYSTAL FOR OPTICAL CONVERSION - An efficient broadband crystal for wavelength conversion, the crystal being a quasi-phase matched non-linear crystal, having an aperiodic poled structure, each period being tuned, and wherein said tuning varies adiabatically along a length of said crystal from a first end wherein said tuning is a strong negative mismatch to a second end wherein said tuning is a strong positive mismatch or vice versa. The crystal is able to provide efficient wavelength conversion over a range of frequencies.02-03-2011
20090046351WAVELENGTH CONVERSION DEVICE AND WAVELENGTH CONVERSION METHOD - A wavelength conversion device is disclosed. The wavelength conversion device includes at least a fundamental wave light source and an external resonator, where a reflectance R02-19-2009
20090284828Optical Comb Frequency Source - This invention relates to methods and apparatus for generating an optical frequency comb. In embodiments a passive mode locked optical waveguide comb uses electrical or optical tuning for the mode spacing frequency (df) and the carrier envelope offset frequency (f11-19-2009
20080212166FOUR-WAVE MIXING SOURCE OF SQUEEZED LIGHT FOR IMAGE PROCESSING AND INTERFEROMETRY - A four-wave mixing squeezed light source includes: a mixing medium having chi(3) non-linear characteristics including two atomic ground states coupled to each other by transitions through optically-excited states; a pump beam having a polarization and a frequency, said frequency being near the ground-to-excited atomic transition but far enough from the atomic transition such that the pump beam is substantially unabsorbed; and a probe beam having a polarization that is orthogonal with respect to the pump beam polarization, the probe beam having a frequency of the pump beam frequency plus or minus a frequency splitting of the two atomic ground states. The mixing medium, the pump beam and the probe beam interact to produce a phase conjugate beam having a polarization that is orthogonal to the pump beam polarization, such that the beams are non-degenerate with the pump beam, and the probe beam is amplified.09-04-2008
20100103503OPTICAL OUTPUT CONTROLLER AND ITS CONTROL METHOD - An optical output controller includes a wavelength conversion device operable to change the wavelength of pumped laser light; a heating/cooling unit operable to control the temperature of the wavelength conversion device; a temperature detector which detects the temperature of the wavelength conversion device; a temperature controller operable to control the heating/cooling unit such that the detected temperature corresponds to a target temperature; an optical output detector operable to detect the optical output from the wavelength conversion device; an optical-output maximization controller operable to determine a temperature at which the optical output is maximized according to the optical output detected by the optical output detector and from the detected temperature detected by the temperature detector and, further, outputs the temperature difference between the determined temperature and the detected temperature; and an adder which adds the temperature difference outputted from the optical-output maximization controller to the target temperature; wherein the temperature difference is added to the target temperature to correct the target temperature for maximizing the optical output.04-29-2010
20120170109DEVICE FOR CONTROLLING OPTICAL FREQUENCY, METHOD OF MANUFACTURING SUCH A DEVICE - The present invention relates to a device for controlling optical frequency (F07-05-2012
20120033291ADVANCED SHIFTING ALGORITHM FOR PROLONGING THE LIFE OF AN OPTICALLY NONLINEAR CRYSTAL - In a shifting algorithm for an optically nonlinear crystal arranged to frequency-convert beam of radiation, the location of one or more defects in the crystal is recorded as an exclusion zone. The location of the beam is stepped incrementally over a surface around a closed or open loop path in increments less than a beam dimension. The path is arranged such that the beam does not enter the exclusion zone.02-09-2012
20110205618Device for generating or receiving terahertz radiation - A device for generating or receiving electromagnetic radiation in a frequency range from 10 GHz to 100 THz is provided. The device includes a housing and a wave guide fiber leading into the housing. The wave guide fiber is adapted for guiding pulsed laser light with a first central wavelength. Within the housing, a terahertz converter is provided for generating or receiving the electromagnetic radiation in the terahertz range. The device also includes a frequency converter for converting the light exiting from the wave guide fiber to a second central wavelength being arranged between the end of the wave guide fiber and the terahertz converter in such a way that the terahertz converter is impinged by the frequency converted light.08-25-2011
20110267681OPTICAL WAVELENGTH CONVERSION DEVICE, AND COHERENT LIGHT SOURCE USING SAME - The invention relates to an optical wavelength conversion device adapted to receive at least one first pump beam (λ11-03-2011
20080316588APPARATUS AND METHOD FOR GENERATING AN RF SIGNAL - An apparatus for generating an RF signal is provided includes a driver configured to generate a timing control for two optical signals. The apparatus further includes at least one optical pulse source configured to generate the two optical signals based on the timing control. In addition, the apparatus includes a photodetector configured to receive the two optical signals as input and further configured to generate an RF signal based on the two optical signals. A method for generating an RF signal is also provided.12-25-2008
20090052012Optical antenna array for harmonic generation, mixing and signal amplification - An optical antenna collects, modifies and emits energy at light wavelengths. Linear conductors sized to correspond to the light wavelengths are used. Nonlinear junctions of small dimension are used to rectify an alternating waveform induced upon the conductors by the lightwave electromagnetic energy. The optical antenna and junctions are effective to produce harmonic energy at light wavelengths. The linear conductors may be comprised of carbon nanotubes that are attached to a substrate material, which may then be connected to an electrical port.02-26-2009
20090052011ALL-OPTICAL, CONTINUOUSLY TUNABLE, PULSE DELAY GENERATOR USING WAVELENGTH CONVERSION AND DISPERSION - A technique for generating variable pulse delays uses one or more nonlinear-optical processes such as cross-phase modulation, cross-gain modulation, self-phase modulation, four-wave mixing or parametric mixing, combined with group-velocity dispersion. The delay is controllable by changing the wavelength and/or power of a control laser. The delay is generated by introducing a controllable wavelength shift to a pulse of light, propagating the pulse through a material or an optical component that generates a wavelength dependent time delay, and wavelength shifting again to return the pulse to its original wavelength.02-26-2009
20090080062METHOD FOR PREPARING A POLED STRUCTURE BY USING DOUBLE-SIDED ELECTRODES - A method for preparing a poled structure by using double-sided electrodes to perform a poling process first provides a ferroelectric substrate with a first polarization direction having a top surface and a bottom surface. Fabrication processes are then performed to form an electrode structure including a first electrode and a second electrode on the top surface and a third electrode in a portion of the bottom surface between the first electrode and the second electrode. Subsequently, a poling process is performed on the electrode structure to form a plurality of inverted domains having a second polarization direction in the ferroelectric substrate, and the second polarization direction is substantially opposite to the first polarization direction.03-26-2009
20120105943Laser ray wavelength modification apparatus - A laser ray wavelength modification apparatus that includes a semiconductor laser element, a fundamental wave light reflecting element, a wavelength modification element, a selective reflection member and a dichroic mirror. The selective reflection member permits fundamental wave light among light rays emitted from the wavelength modification element to pass through to the fundamental wave light reflecting element while reflecting the wavelength modification light. The dichroic mirror is arranged between the semiconductor laser element and the wavelength modification element. The dichroic mirror transmits the fundamental wave light and removes by reflection out the wavelength modification light.05-03-2012
20090251765COMPOSITION FOR PHOTON-ENERGY UP-CONVERSION - The present invention relates to a composition for photon energy up-conversion, a system comprising said composition and to uses of said composition and said system.10-08-2009
20090086309SOURCE OF LIGHT WITH CONVERSION ELEMENT AND FIBER OPTICS, PROCEDURE FOR THE PRODUCTION OF THE SOURCE OF LIGHT AND THEIR USE - Proposed is a light source having a conversion element (04-02-2009
20130215494BURST OSCILLATION METHOD IN LASER SYSTEM AND APPARATUS FOR SAME - Disclosed is a burst mode oscillation method for burst mode oscillation by controlling the peak output of light pulses in a laser system. The burst mode oscillation apparatus includes a seed beam generator which receives electrical input signals having different pulse widths, modulates pulse widths and amplitudes of outputs in output light according to the received electrical input signals, and outputs the modulated pulse light, an amplifier which amplifies the modulated pulse light and outputs amplified pulse light, and a non-linear wavelength converter which can control wavelength-converted output light according to the amplitudes of the peak output changed through the pulse widths of the amplified pulse light.08-22-2013
20090147349LASER MODULE - A laser module including a light emitter, a polarizing and filtering unit, a nonlinear optical crystal, and a first filter is provided. The light emitter emits a first beam. The polarizing and filtering unit is disposed on a transmission path of the first beam. A part of the first beam passes through the polarizing and filtering unit to become as a second beam with a specific polarization direction. The nonlinear optical crystal is disposed on a transmission path of the second beam from the polarizing and filtering unit. The nonlinear optical crystal converts a part of the second beam into a third beam. The first filter is disposed on a transmission path of the other part of the second beam and the third beam from the nonlinear optical crystal. The other part of the second beam is reflected by the first filter. The third beam passes through the first filter.06-11-2009
20080310010LIGHT SOURCE DEVICE AND PROJECTOR - A light source device includes a light source having a plurality of light emitting sections, a plurality of wavelength conversion elements each having a periodic polarization inversion structure, and for converting wavelengths of light beams emitted from the plurality of light emitting sections into predetermined wavelengths, a temperature control medium for controlling temperature of the plurality of wavelength conversion elements, a holding member having a housing space for housing the temperature control medium, and for holding the plurality of wavelength conversion elements, and a temperature control section for controlling the temperature of the plurality of wavelength conversion elements with the temperature control medium, and the temperature control section controls the temperature of the wavelength conversion elements so that the wavelength of the light beam emitted from at least one of the plurality of wavelength conversion elements is different from the wavelength of the light beam emitted from another of the plurality of wavelength conversion elements.12-18-2008
20090290211Device for modifying the wavelength range of a spectrum of light - The present invention relates to a device for modifying, e.g. narrowing the wavelength range of a spectrum of light.11-26-2009
20110019266WAVELENGTH CONVERSION ELEMENT - A wavelength conversion element 01-27-2011
20110026102MOPA Seed Source With Wavelength Control For Resonant Frequency Conversion - A method and system for converting one frequency into another include a MOPA configuration radiating a light at a first frequency which is coupled into a frequency conversion unit. Further included are a control unit operative to monitor the other frequency and a pump unit operative to vary its output power provided that the monitored frequency does not substantially match a reference value stored in the control unit. The output power of the pump unit varies while the master oscillator scans its cavity in search for the desired resonant frequency.02-03-2011
20110032598WAVELENGTH CONVERSION LASER LIGHT SOURCE AND IMAGE DISPLAY DEVICE - A wavelength conversion laser light source includes a fundamental wave laser light source (02-10-2011
20110242643DEVICE FOR REDUCING TIME DISTORTION GENERATED IN LIGHT PULSES BY A NONLINEAR OPTICAL FREQUENCY CONVERTER SYSTEM - A device for reducing time distortion generated in light pulses by an optical frequency converter including at least one nonlinear optical component (10-06-2011
20110242642TERAHERTZ WAVE GENERATION DEVICE - A terahertz wave generating apparatus 10-06-2011
20110096390Methods for Controlling Wavelength-Converted Light Sources to Reduce Speckle - A method for operating a wavelength-converted light source includes directing a pump beam having a fundamental wavelength from the laser source into an input facet of the wavelength conversion device such that a wavelength-converted output beam is emitted from an output facet of the wavelength conversion device in the field of view of an optical detector. A physical property of the wavelength conversion device is varied within individual ones of a succession of consecutive speckle reduction intervals having durations less than the integration time of the optical detector. The physical property of the wavelength conversion device is varied by an amount that is sufficient to change in a phase-matched (PM) wavelength of the wavelength conversion device. The fundamental wavelength of the pump beam is thereafter adjusted based on the change in the PM wavelength to maintain an efficiency of the wavelength conversion in the wavelength conversion device.04-28-2011
20110075251ELECTROMAGNETIC RADIATION FREQUENCY OPTIMIZING DEVICE AND METHOD WITH AMBIENT HEAT CONVERSION DEVICE - A device comprising a conversion channel including: a first end configured to accept ambient electromagnetic radiation, the ambient electromagnetic radiation having an initial frequency, a second end configured to allow the ambient electromagnetic radiation to exit, and at least two opposing walls connecting the first end and the second end, wherein the at least two opposing walls include one or more crystals, the at least two opposing walls being separated by at least one-half of a wave length; wherein when the ambient electromagnetic radiation interacts with the one or more crystals of the at least two opposing side walls, the initial frequency of the ambient electromagnetic radiation being repeatedly increased to an optimal frequency is provided. Furthermore, an associated method is also provided03-31-2011
20120200911HIGH-POWER ELECTROMAGNETIC SUM FREQUENCY GENERATOR SYSTEM - A High-power sum frequency generator system including a first electromagnetic source for generating a first fundamental field and a second fundamental field emitted along a propagation path, and a first nonlinear component and a second nonlinear component arranged in series along the propagation path. The first nonlinear component generates a first sum frequency field from the first fundamental field and the second fundamental field, the first sum frequency field having a first polarization. The second nonlinear component generates a second sum frequency field from the first and second fundamental fields, the second sum frequency field having a second polarization. The system has an output that includes the first sum frequency field and the second sum frequency field, and a direction of the first polarization forms a mutual angle with a direction of the second polarization such that the two polarizations are non-parallel.08-09-2012
20110051226STABILIZED LIGHT SOURCE - A light source including a light emitting unit, a nonlinear medium, and a resonant grating. The light emitting unit is arranged to emit a first light into the nonlinear medium. The nonlinear medium is arranged to generate a second light such that an optical frequency of the second light is higher than an optical frequency of the first light. The resonant grating is arranged to stabilize an optical frequency of the first light by providing optical feedback to the light emitting unit.03-03-2011
20100321764WAVELENGTH CONVERSION DEVICE - A wavelength conversion device 12-23-2010
20110255149WAVELENGTH CONVERSION LASER LIGHT SOURCE AND IMAGE DISPLAY APPARATUS - A wavelength conversion laser light source 10-20-2011
20110134509WAVELENGTH CONVERSION ELEMENT AND METHOD FOR MANUFACTURING WAVELENGTH CONVERSION ELEMENT - A wavelength conversion element having an improved property-maintaining life and a method for manufacturing the wavelength conversion element are provided. A wavelength conversion element 06-09-2011
20100110533LASER LIGHT SOURCE, AND IMAGE DISPLAY APPARATUS AND PROCESSING APPARATUS USING THE SAME - A laser light source (05-06-2010
20100165452WAVELENGTH CONVERSION ELEMENT, LASER LIGHT SOURCE, TWO-DIMENSIONAL IMAGE DISPLAY AND LASER PROCESSING SYSTEM - A wavelength conversion element is provided with a substrate including a nonlinear optical single crystal having a periodically poled structure, the visible light transmittance of the substrate is 85% or higher when ultraviolet light is irradiated to the substrate, and laser light having an average output of 1 W or more is outputted by shortening the wavelength of laser light having a wavelength of 640 nm to 2000 nm. By improving visible light transmission characteristics when the ultraviolet light is irradiated in this way, the breakdown of crystal can be prevented and the stabilization of output characteristics at high output can be realized. As a result, the absorption of green light induced by ultraviolet light can also be suppressed, and the saturation of output and the breakdown of crystal can be avoided.07-01-2010
20110007383METHOD AND SYSTEM FOR GENERATING FLAT OR ARBITRARY SHAPED OPTICAL FREQUENCY COMBS - A method and system for generating an optical frequency comb that employs a dual parallel modulator that inputs an optical signal at a center frequency of a desired optical frequency comb and an RF signal at a frequency corresponding to a desired spacing of the teeth of the optical frequency comb. The amplitudes of the teeth of the optical frequency comb are controlled by controlling the amplitudes of the two RF inputs to the DPM and the phase shift between the two RF inputs. In some embodiments, the three bias voltages for the three interferometers in the DPM are also controlled. In some embodiments, all three interferometers are all biased at the same point (e.g, quadrature). Preferably, but not necessarily, the three interferometers of the DPM are formed on a single substrate.01-13-2011
20120038973STABLE MOUNTING OF NON-LINEAR OPTICAL CRYSTAL - A nonlinear optical crystal can be mounted to a mounting block configured to receive the crystal. The crystal can be mounted to the mounting block with a face of the crystal abutting a surface of the mounting block. An adhesive secures the crystal to the mounting block by adhering to the bottom and/or sidewall of the channel and to at least corresponding a portion of the bottom and/or side face of the crystal proximate an edge of the crystal.02-16-2012
20090284829PLASMONIC ELEMENTS - A surface plasmon element comprising an array of metal nanoparticles (11-19-2009
20110317254NONLINEAR OPTICAL DEVICE USING NONCENTROSYMMETRIC CUBIC MATERIALS FOR FREQUENCY CONVERSION - This invention is directed to a new class of nonlinear optical device (NLO). For this purpose, in one aspect of this invention, a nonlinear optical device including a first nonlinear optical grating is presented. According to one version of the invention, the first nonlinear optical grating comprises a plurality of adjacent nonlinear optical units arranged in series. Each NLO unit has a single crystal segment and a polycrystalline segment. The single crystal segment is composed of a nonlinear optical crystal material and has its length adapted to provide the nonlinear optical effect. The polycrystalline segments are adapted in length to compensate the phase mismatch among the waves that occur in the single crystal segment.12-29-2011
20080291528WAVELENGTH CONVERTER SYSTEM, CRYSTAL STORAGE APPARATUS, AND CRYSTAL REPLACEMENT METHOD OF WAVELENGTH CONVERTER - A wavelength converter system capable of replacing a nonlinear crystal in a wavelength converter in a short time with ease is provided. The wavelength converter system includes the wavelength converter for converting a wavelength by passing light through the nonlinear crystal and a crystal storage apparatus for storing a nonlinear crystal for replacement used by the wavelength converter, wherein the wavelength converter has a first crystal holder for fixing the nonlinear crystal and a first heater for heating the nonlinear crystal and the crystal storage apparatus has a container, a second crystal holder that is in the container to fix the nonlinear crystal for replacement and interchangeable with the first crystal holder, and a second heater for heating the nonlinear crystal for replacement.11-27-2008
20110102884HIGH-POWER WHITE LEDS AND MANUFACTURING METHOD THEREOF - A light emitting apparatus has a radiation source for emitting short wavelength radiation. A down conversion material receives and down converts at least some of the short wavelength radiation emitted by the radiation source and back transfers a portion of the received and down converted radiation. An optic device adjacent the down conversion material at least partially surrounds the radiation source. The optic device is configured to extract at least some of the back transferred radiation. A sealant substantially seals a space between the radiation source and the optic device.05-05-2011
20110102883HIGH-POWER WHITE LEDS AND MANUFACTURING METHOD THEREOF - A light emitting apparatus has a radiation source for emitting short wavelength radiation. A down conversion material receives and down converts at least some of the short wavelength radiation emitted by the radiation source and back transfers a portion of the received and down converted radiation. An optic device adjacent the down conversion material at least partially surrounds the radiation source. The optic device is configured to extract at least some of the back transferred radiation. A sealant substantially seals a space between the radiation source and the optic device.05-05-2011
20110102882BLUE EXTENDED SUPER CONTINUUM LIGHT SOURCE - A new blue extended super continuum light source is claimed. When pulses of partly coherent monochromatic “pump” radiation of essentially constant amplitude is propagating through a microstructure fibre medium within a region of anomalous dispersion of the medium, then, provided the medium has a finite nonlinear coefficient of the index of refraction, the pump pulse is subject to a modulation instability. This instability results in the generation and exponential growth of sidebands, the two closest to the “pump” frequency being the dominant ones. The modulation frequency is proportional to the square root of the power in the carrier wave. In the time domain this leads to that the interaction between the medium and the radiation results in contraction of the width of the amplitude peaks, which results in formation of a train of narrow pulses with Tera Hertz repetition rate.05-05-2011
20100245985Wavelength converting devices - A wavelength converting substrate 09-30-2010
20120162747TERAHERTZ CONTINUOUS WAVE GENERATOR - A terahertz continuous wave generator includes: an optical intensity modulator configured to modulate an optical signal into DSB optical signals; a local oscillator configured to generate a modulation signal for modulating the optical signal inputted to the optical intensity modulator into DSB optical signals; a notch filter configured to filter an optical signal with a specific frequency; an optical fiber amplifier configured to amplify an output signal of the optical intensity modulator; an optical circulator configured to transmit the optical signal inputted to the optical fiber amplifier to the notch filter and transmit the optical signal reflected from the notch filter to an input of the optical intensity modulator; an optical coupler configured to apply the optical signal to the optical intensity modulator; and an OE converter configured to photomix the DSB signals outputted through the notch filter.06-28-2012
20120134011OPTICAL FIBER DELIVERY SYSTEM FOR DELIVERING OPTICAL SHORT PULSES AND OPTICAL FIBER DELIVERY METHOD - The optical fiber delivery system for delivering optical short pulses includes: a chirped pulse source (05-31-2012
20100020387CHIRPED-PULSE QUADRATIC NONLINEARITY-BASED HIGH-ENERGY PULSE COMPRESSOR - A pulse compression technique for compressing femtosecond-duration high-energy pulses first linearly chirps and thus broadens an input pulse before compressing it by nonlinear soliton compression. The technique simultaneously decreases the final compressed pulse duration and improves of the compressed pulse quality. In the preferred embodiment, a linear dispersive delay (01-28-2010
20090323172OPTICAL APPARATUS, AND WAVELENGTH CONVERSION LASER LIGHT SOURCE, IMAGE DISPLAY APPARATUS, AND LASER LIGHT SOURCE DEVICE ADOPTING SUCH OPTICAL APPARATUS - A wavelength conversion laser light source includes: a non-linear optical crystal of an oxygen octahedral structure, having added thereto a metal ion in other components than a main component; a light source for projecting light into the non-linear optical crystal in an operation mode; and a refractive index recovery mechanism for carrying out a recovery operation for recovering a refractive index of said non-linear optical crystal as shifted overtime due to light projected into the non-linear optical crystal in the operation mode with an applied external energy into the non-linear optical crystal in a non-operation mode in which light is not injected to the non-linear optical crystal.12-31-2009
20120229886TUNABLE OPTICAL FREQUENCY COMB GENERATOR - An optical device comprising a tunable optical frequency comb generator. The comb generator includes an interferometer, and an optical feed-back loop waveguide and an electronic controller.09-13-2012
20110122481INTEGRATED DEVICE AND MANUFACTURING METHOD - An integrated device includes an optical element and an electrical element that are implemented on a substrate. The optical element and the electrical element are bonded by surface-activated bonding technology to a bonding portion that is formed on the substrate and made of metal material.05-26-2011
20110038031PULSED FIBER-MOPA WITH WIDELY-VARIABLE PULSE-DURATION - Master oscillator power amplifier (MOPA) apparatus includes two seed-pulse sources coupled to a single fiber amplifier including one or more stages of amplification. One of the seed-pulse sources is a single-mode source generating pulses having a duration selectively variable between about 0.1 ns and 10 ns. The other seed-pulse source is a multi-mode source generating pulses having a duration selectively variable between about 1 ns and 10 μs. Selectively operating one or the other of the seed-pulse sources provides that the apparatus can deliver pulses selectively variable in a range between about 0.1 ns and 10 μs.02-17-2011
20110038033PHOTON PAIR GENERATING APPARATUS AND PHOTON PAIR GENERATING METHOD - In a photon pair generating apparatus for generating a pair of correlated photons by hyper-parametric scattering, a light-shaping section irradiates an optical resonator with two beams of light of equal wavelength from different directions, and the optical resonator is configured to emit two correlated photons of different wavelengths in one direction as a pair of correlated photons. This makes it possible to provide a photon pair generating apparatus capable of achieving generation of a pair of correlated photons by a simpler configuration.02-17-2011
20110038032TERAHERTZ WAVE GENERATING METHOD AND APPARATUS - A first laser beam 102-17-2011
20120268807System for Continuously Generating Polychromatic Light By Means of Doped Microstructured Optical Fibre - A system for generating polychromatic light, which includes: an optical pumping device suitable for continuously or quasi-continuously emitting a monochromatic or quasi-monochromatic radiation according to a pumping wavelength; a device for guiding light arranged such as to emit polychromatic radiation continuously or quasi continuously, at the output thereof, and a device for coupling between the pumping and coupling device. In the system, the guiding device, includes a microstructured optical fiber in which the core is at least partially doped with a material having a high intrinsic non-linear response, and the geometry of the optical fiber and the doping rate of the core thereof are predetermined such as to adapt the zero dispersion length of the optical fiber to the pumping wavelength.10-25-2012
20080231942MOBILE CHARGE INDUCED PERIODIC POLING AND DEVICE - Devices and methods are disclosed for realizing a high quality bulk domain grating structure utilizing mobile charges that are generated by means of photo-excitation in a substrate. An effect of light exposure (UV, visible, or a combination of wavelengths) is to generate photo-induced charges. The application of a voltage across the substrate combined with the application of light exposure causes a photo-induced current to flow through the substrate. The photo-induced charges (behaving like virtual electrode inside the material) and the photo-induced current result in both reduction of the coercive field required for domain inversion in the material and improve realization of the domain inversion pattern, which previously has not been possible at room temperature.09-25-2008
20080225383Method and Devices for Generating Stable and Tunable Light Pulses - Methods and devices for generating stable, tunable and intense output light pulses are provided. A primary beam of light pulses is used to form a filament in an interaction zone. A secondary bean of light pulses is superposed with the filament and interacts therewith to generate the output light pulses. The parameters of the primary and secondary beams in the interaction zone can be controlled to obtain targeted optical characteristics of the output pulses. Multiple secondary beaus may also be used.09-18-2008
20080225382Enhanced continuum generation in nonlinear bulk optic materials - In accordance with the present invention, a bulk optic material (for example, silica) is processed to form a spatially microstructured element, such as a photonic bandgap (PBG) structure. An ultra-short laser pulse source is used as an input signal that is applied to the bulk optic PBG structure to generate an enhanced continuum output. The PBG structure may comprise any type of one-, two- or three-dimensional grating structure, where the selected structure will dictate the type(s) of enhancement(s) that are present in the generated continuum—generally in the form of a broadened continuum and/or the inclusion of one or peaks in the continuum. The use of a relatively small-dimensioned bulk material allows for the continuum to be generated without the need for any type of optical confinement (waveguide). In one embodiment, the bulk PBG structure may be is subjected to one or more additional processes (such as UV exposure, electromagnetic field application, etc.) to modify the nonlinearity of the bulk optic material, in one case resulting in the reduction of the inherent chromatic dispersion and enhancement of the generated continuum.09-18-2008
20080218847WAVELENGTH CONVERSION DEVICES - It is provided a wavelength conversion device 09-11-2008
20080218846Method For Preparing A Periodically Poled Structure - A method for preparing a periodically poled structure according to this aspect of the present invention comprises the steps of providing a ferroelectric substrate and performing a poling process by applying a poling current to at least one portion of the ferroelectric substrate according to a current waveform. The current waveform include a major phase and a tailed phase accompanying the major phase; the major phase has at least one peak current (Ip) and terminates when the current drops substantially equal to Ip/e, and the charge delivered to the portion of the ferroelectric substrate during the major phase is larger than that delivered during the tailed phase. The nucleation phase is configured to generate nucleation sites in the portion of the ferroelectric substrate and the spreading phase is configured to increase the size of the nucleation sites.09-11-2008
20110267682PROXIMITY COUPLED ATHERMAL OPTICAL PACKAGE COMPRISING LASER SOURCE AND COMPOUND FACET WAVELENGTH CONVERSION DEVICE - Particular embodiments of the present disclosure bring an SHG crystal, or other type of wavelength conversion device, into close proximity with a laser source to eliminate the need for coupling optics, reduce the number of package components, and reduce package volume. According to one embodiment of the present disclosure, an optical package is provided comprising a laser source and a wavelength conversion device. The laser source is positioned such that the output face of the laser source is proximity-coupled to a waveguide portion of the input face of the wavelength conversion device. The input face of the wavelength conversion device comprises an α-cut facet and β-cut facet. The α-cut facet of the input face is oriented at a horizontal angle α, relative to the waveguide of the wavelength conversion device to permit proximity coupling of the output face of the laser source and the input face of the wavelength conversion device. The β-cut facet of the input face is oriented at a horizontal angle β, relative to the waveguide of the wavelength conversion device to cooperate with the horizontal tilt angle of the device to reduce back reflections from the input face of the wavelength conversion device into the laser source. Additional embodiments are disclosed.11-03-2011
20130148189NONLINEAR OPTICAL CdSiP2 CRYSTAL FOR USE IN SURGICAL LASER06-13-2013
20120087004OPTICAL COMB GENERATOR - Provided is an optical comb generator including a light source, a first waveguide region, a modulation region, and a second waveguide region. The light source is configured to output single-mode light. The first waveguide region divides an output of the light source into first light and second light. The modulation region includes a first modulator and a second modulator modulating the first light and the second light respectively. The second waveguide region combines outputs of the first modulator and the second modulator to output an optical comb. Here, the first modulator and the second modulator respectively include a first quantum well and a second quantum well having an asymmetric structure with respect to each other. The light source, the first waveguide region, the modulation region, and the second waveguide region are integrated into one substrate.04-12-2012
20100315698Modular ring resonator - An optical resonator with an optical mode has a resonator block with and opening. At least one optical component is mounted on a holder that is positioned in the opening to locate the component in the mode of the resonator. The holder is contrained by the resonator block so that the orientation of the component in the plane of the resonator is substantially fixed by the opening. The component is simply aligned in the resonator by rotating the holder in the opening. The resonator block may also have a mirror reference surfaces that automatically aligns a mirror that is pressed against the surface. The resonator has a high degree of optomechanical assembly and facilitates initial component alignment and the interchange of optical components and mirrors.12-16-2010
20130155491METHOD AND SYSTEM FOR REGENERATING AND RESHAPING OF OPTICAL SIGNALS - A method and an apparatus for processing an optical signal are disclosed wherein an input optical signal having an amplitude profile is combined by means of Bragg scattering with a first pulsed pump signal having a first waveshape and a second pulsed pump signal having a second waveshape. The combined optical signal is input in a nonlinear optical material for frequency converting the input optical signal thereby obtaining an idler signal wherein the first pulsed pump signal co-propagates with the input optical signal and the second pulsed pump signal co-propagates with the idler signal. The idler signal produced has a peak amplitude proportional to the peak amplitude of the input optical signal and a shape corresponding to the second pump waveshape.06-20-2013
20130155492METAMATERIALS WITH ENHANCED NONLINEARITY - Embodiments provide metamaterials having an enhanced nonlinear response to light. The metamaterials are artificially manufactured materials having a nonlinear response to light greater than that typically found in naturally occurring materials. A two-dimensional periodic metal-dielectric array can be mathematically mapped as an effective uniform dielectric slab with enhanced optical nonlinearity. The enhanced nonlinearity is controlled by the geometry of the array. Further, the configuration of the array can be applied to form three-dimensional structures having an enhanced nonlinear response to light.06-20-2013
20130188241Flexible and Stable Supercontinuum Source - Optical pulse source comprising optical pump laser for generating optical pump pulses at repetition rate Rf; a nonlinear optical element comprising an optical fiber for generating supercontinuum pulses; a gating device provided operable to selectively control the launch of pump pulses into the optical fiber at a reduced, lower repetition rate Rr=Rf/N in order to generate supercontinuum pulses at different user selectable repetition rates lower than the pump pulse repetition rate; first and second optical amplifiers; wavelength tunable optical bandpass filter; wherein the optical fiber can generate supercontinuum pulses having a supercontinuum spanning from below 450 nm to greater than 2000 nm; and wherein said optical pulse source comprises an all-fiber source wherein said optical pump laser comprises a fiber oscillator, said gating device comprises a fiber coupled optical modulator, and the optical pump pulses are launched into the optical fiber without the use of free space optics.07-25-2013

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