| Entries |
| Document | Title | Date |
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| 20100074284 | LIGHT SOURCE UNIT AND IMAGE DISPLAYING APPARATUS USING THE SAME - An object is to provide a light source unit that focuses a laser beam having different divergence angles in longitudinal direction and lateral direction, without deviating longitudinally and laterally from an incident end-face of an optical fiber, and also that simplifies assembling lenses into a lens barrel. The light source unit herein provided includes a first lens barrel | 03-25-2010 |
| 20100142572 | METHOD AND SYSTEM FOR CONTROLLING WAVELENGTHS OF MULTI-PATH LASER - A method for controlling wavelengths of a multi-path laser is provided. The method includes: obtaining a difference between an actual output wavelength and a target output wavelength of each laser (S | 06-10-2010 |
| 20120224597 | METHOD AND SYSTEM FOR ULTRASHORT PULSE FIBER DELIVERY USING HIGHER ORDER MODE FIBER - Embodiments of the present invention describe systems and methods for delivering ultrashort laser pulses through an optical fiber system with higher order mode fiber output and without pre-chirping. In one embodiment of the present invention, an all-fiber delivery system comprises a mode-locked solid-state or fiber laser for generating laser pulses in the 0.2 μm to 1.3 μm wavelength range, a single mode fiber with normal dispersion, and a long-period-grating mode converter, and a higher order mode fiber with anomalous dispersion, wherein the all-fiber delivery system is free of bulk optics, and propagates laser pulses without pulse pre-chirping, and wherein higher order mode output beam from the all-fiber delivery system comprises pulses at less than about 200 femtoseconds. | 09-06-2012 |
| 20080259978 | Exposure device and circuit board for laser controller - In an exposure device comprising a laser controller that is configured as a circuit board capable of independently being changed, and that controls the emission of laser light from a laser emitter emitting laser light on receipt of an instruction for control given from a main controller responsible for overall control of the operation of the exposure device, error control information that is obtained in advance with regard to the circuit board and controls variations of a controlling factor due to a circuit error of the circuit board is stored into a memory provided to the laser controller prior to the provision of the circuit board to the exposure device. On receipt of an instruction for control given from the main controller to cause the emission of laser light in a predetermined amount of light, the laser controller determines a condition of emission of laser light based on the error control information stored in the memory to cause the laser emitter to emit laser light under the condition of emission. | 10-23-2008 |
| 20080285605 | OPTICAL SCANNING APPARATUS - An optical scanning apparatus includes a light source configured to emit a plurality of laser beams from a plurality of light emitting parts, a beam shaping unit configured to shape the laser beams emitted from the light source, a detection unit provided outside the light source and configured to detect an amount of a laser beam that is not shaped by the beam shaping unit in the laser beams emitted from the light source in an area outside the beam shaping unit, and a light amount control unit configured to control amounts of the laser beams emitted from the light source based on a detection result detected by the detection unit. The detection unit includes a plurality of light-sensitive elements. The light amount control unit controls the light amounts of the laser beams emitted from the light source based on detection results of the light-sensitive elements. | 11-20-2008 |
| 20080219304 | ANALOG EXTERNAL CAVITY LASER - The present invention relates to the analog external cavity lasers (ECLs) including designs, materials, methods of manufacturing and methods of use for such ECLs and packages for such ECLs. Numerous criteria are presented that lead to improved cost/performance for ECLs and for systems incorporating such ECLs. | 09-11-2008 |
| 20100296533 | PROJECTION WITH SLOW RELAY AND FAST PROJECTION SUBSYSTEMS - In a coherent light projection system including an image forming system, a relay system, a speckle reduction element, and a projection subsystem, the relay system can have a first f-number, and the projection subsystem can have a second f-number less than the first f-number. The relay system can have a first working distance, and the projection subsystem can have a second working distance less than the first working distance. The image forming system can project an initial image having a first size, and an intermediate image can have a second size greater than or equal to the first size. The speckle reduction element can have a curved surface through which the intermediate image is transferred. The speckle reduction element can include a lenslet arrangement formed on a surface thereof. The speckle reduction element can be moved in a direction parallel to an optical axis of the speckle reduction element. | 11-25-2010 |
| 20100316072 | METHODS FOR STABILIZING THE OUTPUT OF A PULSED LASER SYSTEM HAVING PULSE SHAPING CAPABILITIES - Methods stabilize the output of a pulsed laser system using pulse shaping capabilities. In some embodiments, transient effects following a transition between a QCW regime and a pulse shaping regime are mitigated by ensuring that the average QCW optical power substantially corresponds to the average pulsed optical power outputted in a steady-state operation of the pulsed laser system in the pulse shaping regime. The QCW signal or the pulse shaping signal may be adapted for this purpose. In other embodiments, transient effects associated with non-process pulses emitted between series of consecutive process pulses are mitigated through the proper use of sequential pulse shaping. | 12-16-2010 |
| 20110013654 | WAVELENGTH VARIABLE LASER DEVICE, AND METHOD AND PROGRAM FOR CONTROLLING THE SAME - Provided is a wavelength variable laser device wherein an SOA is simplified. The wavelength variable laser device includes: an optical filter formed on a PLC; an SOA that supplies light to the optical filter; a light reflecting section that returns the light transmitted through the optical filter to the SOA via the optical filter; optical waveguides which are formed on the PLC and connect the SOA, the optical filter, and the light reflecting section; a wavelength variable section that changes a wavelength of the light transmitting through the optical filter; and a phase variable section that changes a phase of the light propagated on the optical waveguides. | 01-20-2011 |
| 20110116520 | EYE-SAFE LASER-BASED LIGHTING - The invention relates to a laser-based light source comprising a laser device ( | 05-19-2011 |
| 20120230355 | SYSTEM FOR MONITORING ALL-OPTICAL POLARIZATION HAVING A CONTRA-PROPAGATING PUMP BEAM - The present invention relates to a system ( | 09-13-2012 |
| 20120120973 | Laser Selector Mechanism - An amusement attraction may have a laser input device where a user may wave several fingers or make repeated motions to break a laser beam in a predefined pattern. The pattern may be recognized by a controller to perform a specific function. In one embodiment, a maintenance technician may use the input device to turn on or off certain lasers in a laser maze attraction. In another embodiment, a game player may use the input device to configure the game, change conditions of the game, or perform some other function. | 05-17-2012 |
| 20080253413 | Laser lithography system with improved bandwidth control - A method and apparatus may comprise a seed laser, along with an amplifier laser amplifying the output of the seed laser. A bandwidth metrology module may provide a bandwidth measurement and a bandwidth error signal may be provided using a bandwidth set point. A differential timing system responsive to the error signal can selectively adjust a differential firing time between the seed laser and amplifier laser. A beam dimension and center wavelength control system may adjust a beam dimension, within the cavity of the seed laser, to select bandwidth, and may adjust center wavelength at the same time, using a plurality of beam expansion prisms and at least one other prism or other optical element in the cavity to select center wavelength. | 10-16-2008 |
| 20100215067 | GRAZING-INCIDENCE-DISK LASER ELEMENT - A solid-state gain element including a thin doped region in which an optical signal propagates through the thin doped region at a large angle with respect to the normal to the thin doped region, reflects at a boundary of the thin doped region, and passes through the thin doped region again. An optical pump beam propagates through the thin doped region also at a large angle with respect to the normal to the thin doped region. In one example, the gain element and source of the pump beam are configured such that there is total internal reflection of the pump beam at the boundary of the thin doped region for a second pumping pass through the thin doped region. In another example, an elliptically symmetric laser beam is used to create a circularly symmetric gain region in the thin doped region. | 08-26-2010 |
| 20100061412 | PUMP ENERGY WAVELENGTH STABILIZATION - In a method, a gain medium is provided having an absorption coefficient that varies with wavelength. An absorption coefficient curve of the absorption coefficient or a range of wavelengths comprises peaks and valleys. A pump module is operated to output pump energy at an operating wavelength within one of the valleys, at which the absorption coefficient is approximately less than 40% of the absorption coefficient at an adjacent peak of the absorption to coefficient curve defining the valley. The pump energy is directed through the gain medium. A portion of the pump energy is absorbed with the gain medium and laser light is emitted from the gain medium responsive to the absorbed pump energy. The non-absorbed pump energy (feedback pump energy) is fed back to the pump module. The operating wavelength of the pump energy is stabilized using the feedback pump energy. | 03-11-2010 |
| 20120147912 | VERTICAL CAVITY SURFACE EMITTING LASER DEVICE WITH ANGULAR-SELECTIVE FEEDBACK - The present invention relates to a laser device comprising at least one large area VCSEL ( | 06-14-2012 |
| 20120044962 | LASER OSCILLATOR CONTROL DEVICE - A laser oscillator control device includes a controller having a transmitter section and a receiver section; a laser oscillator having a transmitter section and a receiver section and communicating with the controller via a communication line; wherein the laser oscillator control device outputs a control signal from the controller to the laser oscillator, based on a status signal indicating operational state of the laser oscillator sent from the laser oscillator to the controller. The controller has an alternating signal transmitter circuit that generates an alternating signal that changes at a predetermined period, and sends this alternating signal to the laser oscillator, and the laser oscillator has a return signal transmitter circuit which generates a return signal that changes periodically in correspondence to the alternating signal from the controller, and sends this return signal to the controller. Furthermore, the controller has a monitoring circuit monitoring the return signal from the laser oscillator, and if it determines that there is an abnormality in the return signal, outputs a stop control signal for stopping laser beam irradiation by the laser oscillator. | 02-23-2012 |
| 20090245304 | MULTI-PASS OPTICAL POWER AMPLIFIER - Anisotropic crystals such as Nd:YVO | 10-01-2009 |
| 20090135864 | OPTICAL MODULE - A cut-out portion of a ground conductor is located in a region where a header faces a flexible board from the junction of a signal pin and a signal line and faces the signal line. The size of the cut-out portion is determined so that the impedance of the signal pin is matched to the impedance of the signal line. | 05-28-2009 |
| 20120300801 | Regulating a Vertical-Cavity Surface-Emitting Laser (VCSEL) -Based Optical Communication Link - In one embodiment, a transmitter can bias a vertical-cavity surface-emitting laser (VCSEL) coupled to an optical medium. The biasing of the VCSEL determines at least in part an optical power output by the VCSEL to the optical medium. The transmitter can also modulate the VCSEL with data to transmit the data optically through the optical medium to a receiver; receive from the receiver through a feedback channel an error vector representing a degradation in performance of the VCSEL sensed by the receiver or an instruction vector comprising one or more coefficients for use in biasing the VCSEL; and adjust the biasing of the VCSEL based on the error vector or the instruction vector to regulate the optical power output by the VCSEL to the optical medium. | 11-29-2012 |
| 20120076161 | LONG DISTANCE TRANSMISSION USING MULTI-MODE VCSEL UNDER INJECTION LOCKING - Adjustable chirp is achieved in injection-locked, 10-Gb/s directly modulated, multimode 1.55-μm VCSELs for the first time, leading to 90× increase in standard single-mode fiber transmission distance to 90 km. | 03-29-2012 |
| 20120327962 | SYSTEM AND METHOD FOR SUPPRESSING PARASITICS IN AN OPTICAL DEVICE - An optical device, a method of making a laser gain medium, and a method of suppressing parasitics in a laser device include a core region comprising a plurality of a first type of ions that absorb energy at a first wavelength and transfer the absorbed energy to a plurality of a second type of ions that lase at a second wavelength after receiving the transferred energy. A cladding region coupled to the core region comprising another plurality of the second type of ions that suppress parasitics in the optical device by absorbing energy of at least a transverse portion of the second wavelength that enters the cladding region. | 12-27-2012 |
| 20120287953 | LASER DEVICE - A laser device includes a partially reflective mirror for separating laser light into monitor light and output light, a light output monitor device for detecting the intensity of the monitor light from the partially reflective mirror, a controller for controlling the intensity of the output light from the partially reflective mirror by controlling the output of a laser light source on the basis of a detection value of the light output monitor device, and a power meter device for detecting the intensity of the output light from the partially reflective mirror during a predetermined calibration time period, wherein the controller calibrates the output of the light output monitor device on the basis of a detection value of the power meter device. | 11-15-2012 |
| 20110158269 | LASER MODULE, CONTROL METHOD OF THE SAME, CONTROL DATA OF THE SAME, AND CONTROL DATA GENERATION METHOD - A laser module includes a semiconductor laser, an output optical system provided on an optical output side of the semiconductor laser, a temperature detecting element that detects a temperature of the output optical system; and an output controller that calculates a drive current to set an optical output intensity of the laser module at a desired value on the basis of temperature information obtained by the temperature detecting element, and outputs the drive current to the semiconductor laser. | 06-30-2011 |
