Patent application number | Description | Published |
20080316592 | LASER DEVICE AND OPTICAL AMPLIFIER - Laser light emission across a wide bandwidth emission spectrum is enabled in a laser device equipped with solid gain media. The laser device is equipped with: a resonator; a plurality of solid gain media, having fluorescent spectra that at least partially overlap with each other, provided within the resonator; and pumping means, for pumping the plurality of solid gain media. The entire fluorescent spectrum width of the plurality of solid gain media is greater than the fluorescent spectrum width of each solid gain medium. | 12-25-2008 |
20080316593 | LASER DEVICE AND OPTICAL AMPLIFIER - Laser light emission across a wide bandwidth emission spectrum is enabled in a laser device equipped with solid gain media. The laser device is equipped with: a resonator; a plurality of solid gain media, having fluorescent spectra that at least partially overlap with each other, provided within the resonator; and pumping means, for pumping the plurality of solid gain media. The entire fluorescent spectrum width of the plurality of solid gain media is greater than the fluorescent spectrum width of each solid gain medium. | 12-25-2008 |
20080317073 | MODE-LOCKED LASER DEVICE - A mode-locked laser device includes a Fabry-Perot resonator, a mode-locking element disposed within the resonator, a solid-state laser medium disposed within the resonator, and exciting means for applying excitation light to the solid-state laser medium. The opposite ends of the resonator, the mode-locking element and the solid-state laser medium are disposed to provide an average beam diameter of lasing light of not more than 150 μm on the mode-locking element and an average beam diameter of the lasing light of not more than 200 μm within the solid-state laser medium. | 12-25-2008 |
20080317074 | MODE-LOCKED LASER DEVICE - A mode-locked laser device includes a Fabry-Perot resonator, a mode-locking element disposed within the resonator, a solid-state laser medium disposed within the resonator, and exciting means for applying excitation light to the solid-state laser medium. The opposite ends of the resonator, the mode-locking element and the solid-state laser medium are disposed to provide an average beam diameter of lasing light of not more than 150 μm on the mode-locking element and an average beam diameter of the lasing light of not more than 200 μm within the solid-state laser medium. | 12-25-2008 |
20090080474 | MODE-LOCKED LASER APPARATUS - A mode-locked laser apparatus includes a resonator (laser cavity), a mode-locking device placed in the resonator, a solid-stated laser medium that is doped with Yb (ytterbium) and placed in the resonator and an excitation means for causing excitation light to enter the solid-state laser medium. In the mode-locked laser apparatus, light with an oscillation wavelength in a wavelength band on the longer wavelength side of the maximum peak wavelength in a fluorescence spectrum of the solid-state laser medium is used as output light. | 03-26-2009 |
20110224512 | INTRACELLULAR pH IMAGING METHOD AND APPARATUS USING FLURESCENCE LIFETIME - In a pH measurement method, pulsed excitation light including a wavelength that can excite a predetermined fluorescent material contained in living matter is generated. The fluorescent material acts as coenzyme in oxidation/reduction reaction in vivo. Further, the intensity of the pulsed excitation light does not damage a tissue nor a cell in the living matter, and does not substantially change the pH of the living matter. Further, a predetermined position in the living matter is illuminated with the pulsed excitation light, and light including fluorescence emitted from the fluorescent material excited by illumination with the pulsed excitation light is received. The lifetime of the fluorescence is calculated by time-resolving the intensity of the received fluorescence, and the pH of the living matter is measured based on the lifetime. | 09-15-2011 |
20110224513 | pH MEASUREMENT, ABNORMAL-REGION DETECTION, LIVING-MATTER ANALYSIS METHODS AND APPARATUSES - A pH is measured by generating pulsed excitation-light including a wavelength that can excite a plurality of kinds of fluorescent-material in living matter that act as coenzyme in oxidation/reduction reaction in vivo, and the intensity of the light not damaging a tissue nor a cell and substantially not changing pH, and by illuminating a predetermined position in the living matter with the light, and by receiving fluorescence, and by resolving the intensity of the fluorescence into time domains the number of which is greater than that of the fluorescent-material, and by detecting the intensities of the fluorescence in the respective time domains, and by obtaining, based on the intensities, approximate-curves having gradients unique to the fluorescent-materials, respectively, and by calculating fluorescence lifetimes of at least two of the plurality of kinds of fluorescent-material based on the approximate-curves, and by measuring the pH of the living matter based on the lifetimes. | 09-15-2011 |
20110224519 | LOW-OXYGEN-REGION-ANALYSIS METHOD AND APPARATUS BY TIME-RESOLVED-MEASUREMENT OF LIGHT-INDUCED-AUTOFLUORESCENCE FROM BIOLOGICAL-SAMPLE - Pulsed excitation light including a wavelength that can excite a fluorescent material contained in living matter is generated. The fluorescence lifetime of the fluorescent material is longer than or equal to 4.8 nanoseconds. A predetermined position in the living matter is illuminated with the pulsed excitation light. Further, light including fluorescence emitted from the fluorescent material excited by illumination with the pulsed excitation light is received. The lifetime of the fluorescence included in the received light is calculated by time-resolving the intensity of the fluorescence. Further, the oxygen concentration of the living matter is measured based on the lifetime. | 09-15-2011 |