Coherent light generators inventions 10/08

20080259969 - Slectable multiwavelength laser for outputting visible light: The invention provides a laser system (100) wherein the output may be selected from two or more different wavelengths of output laser light. The system (100) comprises a laser capable of having at least two different wavelengths of laser light resonating in the cavity (105) simultaneously. One of the frequencies... Agent: Heller Ehrman LLP

20080259970 - Fiber laser arrangement: The present invention provides a system, which comprises a fiber laser (1) for generation of laser radiation, and an applicator (8) coupled with the fiber laser (1), the applicator (8) being adapted for delivery of laser radiation from the fiber laser (1) to an area of interest (22) and comprising... Agent: Haynes And Boone, LLP

20080259971 - Method for improving high frequency operation of a vertical cavity surface emitting laser (vcsel) with monolithically integrated bridge arm: A vertical cavity laser apparatus is provided. In one embodiment, the apparatus includes an electrically responsive substrate; a support block positioned on the electrically responsive substrate; a bridge arm structure coupled to the support block, the structure having a base; a laser active area on the bridge arm structure, a... Agent: Heller Ehrman LLP

20080259973 - Wavelength converted laser apparatus: a wavelength converted laser apparatus includes a laser oscillator emitting an excitation laser beam having a first wavelength, a harmonic wave generator converting the excitation laser beam into a beam having a second wavelength lower than the first wavelength and an optical parametric oscillator converting and outputting the beam having... Agent: Mcdermott Will & Emery LLP

20080259972 - Widely tunable laser: A Fabry-Perot laser and a micro-actuator are utilized to provide continuous tuning over a range of wavelengths.... Agent: Dorsey & Whitney LLP

20080259974 - Not temperature stabilized pulsed laser diode and all fibre power amplifier: A laser system has an output/input coupler unit (49) with a circulator (37). An output of the circulator (37) is operationally connected to a detector unit (43). The input/output (EA37) of the circulator is operationally connected to a transmitter and a receiver optics 41. Laser light is input to the... Agent: Antonelli, Terry, Stout & Kraus, LLP

20080259975 - Light source, lighting device, monitoring device, and projector: A light source includes a light source unit which supplies first wavelength light, a wavelength converting unit which converts the first wavelength light into second wavelength light different from the first wavelength light, and a leakage preventing unit which prevents leakage of the first wavelength light out of the light... Agent: Oliff & Berridge, PLC

20080259976 - Organic columnar thin films: A thin film includes a substrate and a transparent, porous film of organic material, such as 8-hydroxyquinoline aluminum. The organic material is vapor deposited on the substrate such that the film has distinct helical columns extending away from the substrate.... Agent: Christensen, O'connor, Johnson, Kindness, PLLC

20080259977 - Waveguide structure for upconversion of ir wavelength laser radiation: The invention relates to a waveguide structure for upconversion of IR wavelength laser radiation and is characterized in comprising a) at least one base substrate layer made essentially out of a moisture-stable mechanically- and/or temperature-stable material b) at least one active layer made essentially out of a halide glass, preferably... Agent: Philips Intellectual Property & Standards

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... Agent: Mcdermott Will & Emery LLP

20080259979 - Providing a suitable output current to a laser diode: A laser diode driving circuit capable of providing a suitable output current to a laser diode is disclosed. The laser diode driving circuit includes a current supply, a first pseudo laser diode, a second pseudo laser diode, and an output current mirror circuit. An input current provided by the current... Agent: Cooper & Dunham, LLP

20080259981 - Photonic device including semiconductor structure having doped region with array of subwavelength recesses: Various aspects of the present invention are directed to photonic devices, such as electro-optic modulators, passive filters, and tunable filters. In one aspect of the present invention, a photonic device includes a semiconductor structure having a p-region and an n-region. A doped region is formed on or within the semiconductor... Agent: Hewlett Packard Company

20080259982 - Semiconductor laser diode formed with window at cleavage facet and fabricating method thereof: The semiconductor laser diode formed with a window at a cleavage facet and a fabricating method thereof are disclosed, wherein a ridge adjacent to a cleavage facet of the semiconductor laser diode and part of the p-clad layer underneath the ridge are etched to form a window, such that a... Agent: Birch Stewart Kolasch & Birch

20080259980 - Semiconductor light emitting device including oxide layer: A device includes a semiconductor structure comprising a III-nitride light emitting layer disposed between an n-type region and a p-type region. The semiconductor structure is grown over an oxide layer disposed between first and second III-nitride layers. The oxide layer may at least partially relieve the strain in the light... Agent: Patent Law Group LLP

20080259983 - Semiconductor quantum cascade laser and systems and methods for manufacturing the same: A bipolar quantum cascade (QC) laser includes a p-n junction disposed adjacent to an active/injection region of semiconductor layers. Systems that make use of such QC lasers and methods for manufacturing such QC lasers are also described.... Agent: Sonnenschein Nath & Rosenthal LLP

20080259984 - Structure having photonic crystal layer and surface emitting laser including the same: A structure has a photonic crystal layer comprising a first member made of a material having a first refractive index; and a second member made of a material having a second refractive index, wherein the first member has a plurality of holes periodically arranged, and the second member is placed... Agent: Fitzpatrick Cella Harper & Scinto

20080259985 - Method and apparatus for modifying out of band reflection for a laser element: A method and apparatus for modifying the out of band reflection of a laser element is described. The laser element includes an active medium excited by optical pumping means to produce stimulation emission of light. The laser element further includes a Bragg grating structure for providing optical feedback for the... Agent: Mcdermott Will & Emery LLP

20080259986 - Laser light source apparatus and image generating apparatus using such laser light source apparatus: Disclosed is a laser light source apparatus. The laser light source apparatus includes a pumping light source and a pair of resonator mirrors. In the laser light source apparatus, the pumping light source includes at least a laser medium and a wavelength conversion element, and the laser medium is pumped... Agent: Robert J. Depke Lewis T. Steadman

20080259987 - Enhanced emission of light from organic light emitting diodes: A device comprising an organic light emitting diode coupled to a cavity, said cavity containing an emitting species, said device being arranged such that light emitted from said organic light emitting diode is at least partially absorbed by the emitting species and re-emitted from the emitting species. The device may... Agent: Marshall, Gerstein & Borun LLP

20080259988 - Optical actuator with improved response time and method of making the same: An optical actuator having an improved response time and an improved frequency operational range due to the reduced mass of a substrate coupled to an actuator and method of making the same. The optical actuator may be formed by adhering an uncoated substrate to the actuator using an epoxy. Once... Agent: Grant R Clayton Clayton Howarth & Cannon, PC

20080259969 - Slectable multiwavelength laser for outputting visible light: The invention provides a laser system (100) wherein the output may be selected from two or more different wavelengths of output laser light. The system (100) comprises a laser capable of having at least two different wavelengths of laser light resonating in the cavity (105) simultaneously. One of the frequencies... Agent: Heller Ehrman LLP

20080259970 - Fiber laser arrangement: The present invention provides a system, which comprises a fiber laser (1) for generation of laser radiation, and an applicator (8) coupled with the fiber laser (1), the applicator (8) being adapted for delivery of laser radiation from the fiber laser (1) to an area of interest (22) and comprising... Agent: Haynes And Boone, LLP

20080259971 - Method for improving high frequency operation of a vertical cavity surface emitting laser (vcsel) with monolithically integrated bridge arm: A vertical cavity laser apparatus is provided. In one embodiment, the apparatus includes an electrically responsive substrate; a support block positioned on the electrically responsive substrate; a bridge arm structure coupled to the support block, the structure having a base; a laser active area on the bridge arm structure, a... Agent: Heller Ehrman LLP

20080259973 - Wavelength converted laser apparatus: a wavelength converted laser apparatus includes a laser oscillator emitting an excitation laser beam having a first wavelength, a harmonic wave generator converting the excitation laser beam into a beam having a second wavelength lower than the first wavelength and an optical parametric oscillator converting and outputting the beam having... Agent: Mcdermott Will & Emery LLP

20080259972 - Widely tunable laser: A Fabry-Perot laser and a micro-actuator are utilized to provide continuous tuning over a range of wavelengths.... Agent: Dorsey & Whitney LLP

20080259974 - Not temperature stabilized pulsed laser diode and all fibre power amplifier: A laser system has an output/input coupler unit (49) with a circulator (37). An output of the circulator (37) is operationally connected to a detector unit (43). The input/output (EA37) of the circulator is operationally connected to a transmitter and a receiver optics 41. Laser light is input to the... Agent: Antonelli, Terry, Stout & Kraus, LLP

20080259975 - Light source, lighting device, monitoring device, and projector: A light source includes a light source unit which supplies first wavelength light, a wavelength converting unit which converts the first wavelength light into second wavelength light different from the first wavelength light, and a leakage preventing unit which prevents leakage of the first wavelength light out of the light... Agent: Oliff & Berridge, PLC

20080259976 - Organic columnar thin films: A thin film includes a substrate and a transparent, porous film of organic material, such as 8-hydroxyquinoline aluminum. The organic material is vapor deposited on the substrate such that the film has distinct helical columns extending away from the substrate.... Agent: Christensen, O'connor, Johnson, Kindness, PLLC

20080259977 - Waveguide structure for upconversion of ir wavelength laser radiation: The invention relates to a waveguide structure for upconversion of IR wavelength laser radiation and is characterized in comprising a) at least one base substrate layer made essentially out of a moisture-stable mechanically- and/or temperature-stable material b) at least one active layer made essentially out of a halide glass, preferably... Agent: Philips Intellectual Property & Standards

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... Agent: Mcdermott Will & Emery LLP

20080259979 - Providing a suitable output current to a laser diode: A laser diode driving circuit capable of providing a suitable output current to a laser diode is disclosed. The laser diode driving circuit includes a current supply, a first pseudo laser diode, a second pseudo laser diode, and an output current mirror circuit. An input current provided by the current... Agent: Cooper & Dunham, LLP

20080259981 - Photonic device including semiconductor structure having doped region with array of subwavelength recesses: Various aspects of the present invention are directed to photonic devices, such as electro-optic modulators, passive filters, and tunable filters. In one aspect of the present invention, a photonic device includes a semiconductor structure having a p-region and an n-region. A doped region is formed on or within the semiconductor... Agent: Hewlett Packard Company

20080259982 - Semiconductor laser diode formed with window at cleavage facet and fabricating method thereof: The semiconductor laser diode formed with a window at a cleavage facet and a fabricating method thereof are disclosed, wherein a ridge adjacent to a cleavage facet of the semiconductor laser diode and part of the p-clad layer underneath the ridge are etched to form a window, such that a... Agent: Birch Stewart Kolasch & Birch

20080259980 - Semiconductor light emitting device including oxide layer: A device includes a semiconductor structure comprising a III-nitride light emitting layer disposed between an n-type region and a p-type region. The semiconductor structure is grown over an oxide layer disposed between first and second III-nitride layers. The oxide layer may at least partially relieve the strain in the light... Agent: Patent Law Group LLP

20080259983 - Semiconductor quantum cascade laser and systems and methods for manufacturing the same: A bipolar quantum cascade (QC) laser includes a p-n junction disposed adjacent to an active/injection region of semiconductor layers. Systems that make use of such QC lasers and methods for manufacturing such QC lasers are also described.... Agent: Sonnenschein Nath & Rosenthal LLP

20080259984 - Structure having photonic crystal layer and surface emitting laser including the same: A structure has a photonic crystal layer comprising a first member made of a material having a first refractive index; and a second member made of a material having a second refractive index, wherein the first member has a plurality of holes periodically arranged, and the second member is placed... Agent: Fitzpatrick Cella Harper & Scinto

20080259985 - Method and apparatus for modifying out of band reflection for a laser element: A method and apparatus for modifying the out of band reflection of a laser element is described. The laser element includes an active medium excited by optical pumping means to produce stimulation emission of light. The laser element further includes a Bragg grating structure for providing optical feedback for the... Agent: Mcdermott Will & Emery LLP

20080259986 - Laser light source apparatus and image generating apparatus using such laser light source apparatus: Disclosed is a laser light source apparatus. The laser light source apparatus includes a pumping light source and a pair of resonator mirrors. In the laser light source apparatus, the pumping light source includes at least a laser medium and a wavelength conversion element, and the laser medium is pumped... Agent: Robert J. Depke Lewis T. Steadman

20080259987 - Enhanced emission of light from organic light emitting diodes: A device comprising an organic light emitting diode coupled to a cavity, said cavity containing an emitting species, said device being arranged such that light emitted from said organic light emitting diode is at least partially absorbed by the emitting species and re-emitted from the emitting species. The device may... Agent: Marshall, Gerstein & Borun LLP

20080259988 - Optical actuator with improved response time and method of making the same: An optical actuator having an improved response time and an improved frequency operational range due to the reduced mass of a substrate coupled to an actuator and method of making the same. The optical actuator may be formed by adhering an uncoated substrate to the actuator using an epoxy. Once... Agent: Grant R Clayton Clayton Howarth & Cannon, PC

20080253407 - Laser and method for generating pulsed laser radiation: A laser for generating pulsed laser radiation is provided. The laser includes a resonator, a laser-active medium arranged in the resonator, and an acousto-optic modulator arranged in the resonator. The modulator can be put in a first and a second state so as to set the resonator quality, the resonator... Agent: Patterson, Thuente, Skaar & Christensen, P.A.

20080253408 - Method and apparatus to control output spectrum bandwidth of mopo or mopa laser: An apparatus and method which may comprise a seed laser defining an optical cavity producing an output. An amplifier may amplify the seed laser output. A bandwidth error signal generator may provide a bandwidth error signal from measured bandwidth and a target. A bandwidth selection element, which may comprise an... Agent: William C. Cray Cymer, Inc., Legal Dept.

20080253409 - Multi-channel bio-chip scanner: There is provided a multi-channel bio-chip scanner using two or more excitation wavelengths. The bio-chip scanner includes: a glass holder unit mounted with a bio-chip in which a target DNA pre-marked by a fluorescent material is hybridized with a probe DNA; a light source unit irradiating a laser beam onto... Agent: Ladas & Parry LLP

20080253410 - Laser apparatus and manufacturing method of a battery: A laser apparatus is provided which is capable of achieving deep penetration into an aluminum-like metal material without causing welding defects such as spatters or cracks and performing high-speed pulse seam welding. The laser apparatus includes a pulse power source that generates a current signal and a mask signal for... Agent: Steptoe & Johnson LLP

20080253412 - Light source, and image display apparatus, monitoring apparatus, and illumination apparatus using the same: A light source that emits light includes light source units, each emitting a plurality of light beams parallel to one another, the plurality of light beams including first and second light beams, and a beam distance adjustment element that is an optical element made of a light-transmissive material. The beam... Agent: Advantedge Law Group, LLC

20080253411 - Optically active matrix with void structures: An optically active element, such as a photonic crystal, is formed by creating a matrix (1) in which an optically active material is dispersed, and generating one or more void structures (2, 3) in the matrix. The matrix (1) may comprise polymer dispersed liquid crystal. The void structures (2, 3)... Agent: Steptoe & Johnson LLP

20080253414 - Vcsel driver: The invention provides a driver for a semiconductor light emitting device, in particular a vertical cavity surface emitting laser (VCSEL) which includes a delay buffer for generating an output signal as a delayed version of an input signal; a pulse generation stage coupled in parallel with the delay buffer and... Agent: Texas Instruments Incorporated

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... Agent: William C. Cray Cymer, Inc., Legal Dept.

20080253415 - Error control for high-power laser system employing diffractive optical element beam combiner: A high-power laser system includes a laser master oscillator, a plurality of fiber laser amplifiers producing intermediate output beamlets, a diffractive optical element for combining the intermediate beamlets into a combined output beam, and one or more error controllers for minimizing errors related to beam combination that may degrade the... Agent: Patti, Hewitt & Arezina LLC

20080253416 - Laser unit having preparatory function for activating the unit and activation method for the unit: A laser unit having a preparatory function for activating the unit and an activation method for the unit, capable of stabilizing the temperature of each component of the laser unit in the preparation stage when the laser unit is activated in a low-temperature or high-temperature environment, and then effectively judging... Agent: Drinker Biddle & Reath (dc)

20080253417 - Error control for high-power laser system employing diffractive optical element beam combiner with tilt error control: A high-power laser system includes a laser master oscillator, a plurality of fiber laser amplifiers producing intermediate output beamlets, a diffractive optical element for combining the intermediate beamlets into a combined output beam, and one or more error controllers for minimizing errors related to beam combination that may degrade the... Agent: Patti, Hewitt & Arezina LLC

20080253418 - Light source device, monitor device, projector, and driving method for driving light source device: A light source device includes: a plurality of laser light sources that emit laser light; and a light source driving section that drives at least one of the laser light sources by a first driving value that is a value less than a threshold level of at least one of... Agent: Oliff & Berridge, PLC

20080253419 - Diode pumped laser: A switching mechanism (6) and a diode pumped laser system (1) incorporating the switching mechanism (6) that allows a single diode laser pump source (2) to be selectively directed to one of two or more resonant laser cavities (11a,11n). The switching mechanism (6) comprises an optical element that is movable... Agent: Intellectual Property Group Fredrikson & Byron, P.A.

20080253420 - Light-emitting device: The conventional light-emitting element formed by an electroluminescent material has a problem due to poor color purity of light emission. Accordingly, it is an object of the present invention to provide a high luminance and high efficiency light-emitting device formed by an organic compound material. The invention provides a light-emitting... Agent: Eric Robinson

20080253421 - High-power semiconductor laser: A light source includes a semiconductor laser diode and a narrow spectral and spatial bandwidth reflector in optical communication with respect to the semiconductor diode laser and aligned with the output beam of the diode laser, such that a portion of the light in the output beam is reflected back... Agent: Fish & Richardson PC

20080253422 - Surface emitting semiconductor laser: A surface emitting semiconductor laser comprises first and second distributed Bragg reflectors, an active layer and a junction region. The first distributed Bragg reflector includes first III-V compound semiconductor layers and second III-V compound semiconductor layers, and the first and second III-V compound semiconductor layers are alternately arranged. The second... Agent: Smith, Gambrell & Russell

20080253423 - Compact opto-electronic device including at least one surface emitting laser: This relates to an opto-electronic device comprising at least two opto-electronic components (1, 2) which work together, including a first one that is a surface light emitting laser (1) and another opto-electronic component (2). Each of the opto-electronic components (1, 2) is mounted on a main face (3.1, 3.2) that... Agent: Oblon, Spivak, Mcclelland Maier & Neustadt, P.C.

20080253424 - Use of volume bragg gratings for the conditioning of laser emission characteristics: Apparatus and methods for altering one or more spectral, spatial, or temporal characteristics of a light-emitting device are disclosed. Generally, such apparatus may include a volume Bragg grating (VBG) element that receives input light generated by a light-emitting device, conditions one or more characteristics of the input light, and causes... Agent: Woodcock Washburn LLP

20080247424 - Fiber lasers: A system for coupling light into a fiber in accordance with embodiments of the present invention include a first fiber, a second double clad fiber, and a bulk optic component positioned between the first and second fibers. A mode stripper included within the second fiber allows for removal of high... Agent: Fennemore Craig

20080247425 - Q-switched microlaser apparatus and method for use: A monolithic passively Q switched microlaser includes an optically transparent heat conductive element bonded to a gain medium, which is in turn bonded to a saturable absorber, which may also be bonded to a second optically transparent heat conductive element. Only the gain medium and saturable absorber are disposed within... Agent: Hamilton, Brook, Smith & Reynolds, P.C.

20080247426 - Broad-area microlasers and methods for driving them: A multi-mode microlaser and a method for driving a multi-mode broad-area microlaser such as a multi-mode VCSEL is described such that the multi-mode microlaser shows an unexpected Gaussian-like far-field intensity distribution. The driving conditions are in general determined such that a strong reduction of the degree of spatial coherence occurs.... Agent: Bacon & Thomas, PLLC

20080247427 - Optical systems for laser arrays: Surface emitting laser arrays with intra-cavity harmonic generation are coupled to an optical system that extracts harmonic light in both directions from an intra-cavity nonlinear optical material in such a way that the focusing properties of the light beams are matched.... Agent: Morrison Ulman Nupat, LLC

20080247428 - Efficient harmonic generation and frequency conversion in multi-mode cavities: A doubly-resonant cavity structure includes at least one cavity structures so as to allow total frequency conversion for second or third-harmonic generation using χ(2) and χ(3) nonlinearities between the at least one cavity structures. The total frequency conversion is efficiently optimized by determining a critical power allowing for such total... Agent: Gauthier & Connors, LLP

20080247429 - Coherence reduction of diode lasers: The invention provides a method of reducing a time-averaged coherence of laser radiation for current-tunable lasers, and a laser apparatus realizing the method, by modulating the laser drive current using a modulation function optimized for obtaining a pre-determined time-averaged spectral profile of the laser radiation. In a preferred embodiment, the... Agent: Teitelbaum & Maclean

20080247430 - Laser wavelength stabilization: In a coarse wavelength division multiplexing (CWDM) optical transmission system, a distributed feedback (DFB) laser is tuned so that the peak reflection of the grating overlaps with the gain range of the DFB laser. The diffraction grating is tuned so that the peak is positioned on the long wavelength end... Agent: Bergman & Song, LLP

20080247431 - Optical mount for laser rod: An optical mount for holding an optical element, such as a laser rod, in which two or more contact blocks are biased into contact with two faces of the optical element and with a base supporting the optical element. The optical mount maintains good thermal contact with the optical element... Agent: Krugliak, Wilkins, Griffiths & Dougherty Co, Lpa

20080247432 - Semiconductor laser equipment: This invention relates to a semiconductor laser apparatus having a structure to prevent corrosion in a refrigerant flow path of a heat sink and cool stably a semiconductor laser array over a long period. The semiconductor laser apparatus has a semiconductor laser stack, a refrigerant supplier, an insulating piping, and... Agent: Drinker Biddle & Reath (dc)

20080247433 - Nitride semiconductor lasers and its manufacturing method: A nitride semiconductor laser which features low resistance and high reliability. A buried layer is formed by selective growth and the shape of a p-type cladding layer is inverted trapezoidal so that the resistance of the p-type cladding layer and that of a p-type contact layer are decreased. For long-term... Agent: Antonelli, Terry, Stout & Kraus, LLP

20080247435 - Semiconductor laser diode having graded interlayer: A semiconductor laser diode having a graded interlayer is provided. The semiconductor laser diode has the graded interlayer between an active layer composed of InGaN and an electron blocking layer (EBL) composed of AlGaN. The graded interlayer is composed of InxAlyGa1-x-yN(0≦x≦0.2, 0≦y≦0.5) and is formed by grading a composition of... Agent: Ked & Associates, LLP

20080247434 - Semiconductor light-emitting device: A semiconductor light-emitting device capable of increasing the carrier concentration of a p-type cladding layer and improving light-emitting efficiency is provided. A semiconductor light-emitting device is made of a Group II-VI compound semiconductor, and the semiconductor light-emitting device includes an active layer between an n-type cladding layer and a p-type... Agent: Sonnenschein Nath & Rosenthal LLP

20080247436 - Optoelectronic device and method of operating optoelectronic device: The invention provides an optoelectronic device combining a vertical cavity surface emitting laser (VCSEL) and a photodetector for monitoring the output power of the vertical cavity surface emitting laser. To improve the signal-to-noise ratio of the photodetector, a light deflector is interposed between the photodetector and the VCSEL.... Agent: Mark D. Saralino (general) Renner, Otto, Boisselle & Sklar, LLP

20080247437 - Tunable long-wavelength vcsel system: A vertical cavity surface emitting laser system is provided including providing a epitaxially grown bottom spacer layer, an active layer on the epitaxially grown bottom spacer layer, a top spacer layer on the active layer, and etching a part of the epitaxially grown top spacer layer on a side opposite... Agent: Kathy Manke Avago Technologies Limited

20080247438 - Laterally pumped solid-state laser gain-module: A gain-module for a laser resonator has an elongated gain-element located in an diffusely reflective cylindrical enclosure having an elongated entrance slit for admitting pump radiation. Pump radiation is supplied by two diode-laser arrays assemblies each including a fast-axis collimating lens. Propagation axes of the diode-laser array assemblies are at... Agent: Stallman & Pollock LLP

20080247439 - Semiconductor laser device and method for fabrication thereof: In a semiconductor laser device (LD1), a semiconductor laser layer is formed on one face of a semiconductor substrate (1), and a p-type electrode (8) and an n-type electrode (11) are provided on the semiconductor laser layer side and the semiconductor substrate (1) side, respectively, so as to sandwich the... Agent: Mcdermott Will & Emery LLP

20080240171 - Quasi-cw uv laser with low peak pulse-power: Laser apparatus is disclosed in which fundamental-wavelength optical pulses delivered from a mode-locked laser resonator at a pulse-repetition frequency (PRF) are converted to harmonic-wavelength pulses in an optical delay loop. One example is disclosed in which the harmonic-wavelength pulses are delivered directly from the delay loop. Another example is disclosed... Agent: Stallman & Pollock LLP

20080240172 - Radiation emitting apparatus with spatially controllable output energy distributions: A laser handpiece is disclosed, including a fiber optic end having a non-cylindrical shape and further including a reflector surrounding a portion of the fiber optic end. The reflector is shaped to direct laser energy emitted from the fiber optic end in a direction away from the laser handpiece and... Agent: Stout, Uxa, Buyan & Mullins LLP

20080240173 - Method for controlling operation of light emitting transistors and laser transistors: A method for controlling operation of a transistor includes the following steps: providing a bipolar transistor having emitter, base and collector regions; applying electrical signals to the transistor to produce light emission from the transistor; effecting photon-assisted tunneling of carriers in the transistor with self-generated photons of the light emission,... Agent: Martin Novack

20080240175 - Bragg grating reflection strength control: A tunable laser comprises a gain section and two or more reflectors. At least one of the reflectors is a Bragg grating comprising a reduced strength section comprising a base order periodic pattern of marks and spaces from at which at least some of the marks or spaces are missing.... Agent: Mark D. Saralino (general) Renner, Otto, Boisselle & Sklar, LLP

20080240174 - Tunable infrared lasers for gas-phase spectroscopy: Exemplary embodiments provide tunable laser devices, methods for making the laser devices and methods for tuning the laser devices. The tunable laser devices can include an optically pumped semiconductor laser heterostructure, on which a distributed-feedback (DFB) laser grating having variable grating spacings (or chirps) can be formed. The optically pumped... Agent: Mh2 Technology Law Group, LLP

20080240176 - Laser light generating apparatus: A laser light generating apparatus includes a laser light source, a phase-modulator, a signal generating unit configured to generate a modulation signal applied to the phase-modulator, a first external resonator, a second external resonator disposed at the stage succeeding the first external resonator, nonlinear optical elements each provided in the... Agent: Robert J. Depke Lewis T. Steadman

20080240177 - Continuous-wave ultraviolet laser: A laser is disclosed, which is suitable for efficient generation of continuous-wave laser light having a wavelength of about 400 nm or less. The short-wavelength light is generated by first frequency-doubling a fundamental wave, and then sum-frequency mixing the frequency-doubled wave and the fundamental wave. The non-linear interactions are effected... Agent: Buchanan, Ingersoll & Rooney PC

20080240178 - Method and apparatus for material processing: An apparatus processes a surface of an inhabitable structure. The apparatus includes a laser base unit which irradiates an interaction region with laser light, the laser light removing material from the structure. The laser base unit includes a laser generator and a laser head coupled to the laser generator. The... Agent: Knobbe Martens Olson & Bear LLP

20080240180 - Optical fm source based on intra-cavity phase and amplitude modulation in lasers: A laser is disclosed including a gain section having a distributed feedback grating imposed thereon. An absorption section is embedded in the gain section such that the first and second portions of the distributed feedback grating extend on either side of the electro-absorption section. A controller imposes a substantially DC... Agent: Workman Nydegger

20080240179 - Two-dimensional photonic crystal surface-emitting laser: The two-dimensional photonic crystal surface emitting laser according to the present invention includes a number of main modified refractive index areas periodically provided in a two-dimensional photonic crystal and secondary structures each relatively located in a similar manner to each of the main modified refractive index areas. The location of... Agent: Oliff & Berridge, PLC

20080240181 - Laser apparatus and output control method of laser apparatus: A laser apparatus includes: a laser light source; an output member for receiving and transmitting a laser light flux generated by the laser light flux, and outputting a laser light flux; an optical aligning member for positioning the laser light flux generated by the laser light source to the output... Agent: Brinks Hofer Gilson & Lione

20080240182 - Variable attenuator device and method: A new and useful attenuating device and method for attenuating a polarized laser beam is provided. At least one attenuating optic is located along, and is rotatable about, a polarized laser beam axis, and is configured to transmit and to reflect portions of the polarized laser beam. The attenuating optic... Agent: Lawrence R. Oremland, P.C.

20080240183 - Rf excited co2 slab laser tube housing and electrodes cooling: The laser tube housing of a CO2 slab laser is provided with a cooling system in which coolant fluid tubes are inserted into hollowed out portions formed in the longitudinal sidewalls of the laser tube housing; mounting the coolant fluid tubes in this way provides for enhanced cooling and increased... Agent: Stallman & Pollock LLP Attn: Michael A. Stallman

20080240184 - Beam stabilized fiber laser: A laser head generating ultrashort pulses is integrated with an active beam steering device in the head. Direct linkage with an application system by means of an adequate interface protocol enables the active device to be controlled directly by the application system.... Agent: Sughrue Mion, PLLC

20080240185 - Monitoring method and vcsel array with monitoring function: VCSEL array with a structure in which vertical cavity surface emitting devices are arranged on a substrate. The VCSEL array includes first and second optical devices. The second optical device receives light that is directed parallel to the substrate and emitted from the first optical device and converts the light... Agent: Fitzpatrick Cella Harper & Scinto

20080240186 - Polygonal cross-section laser rod for low-cost flashlamp-pumped laser: A laser rod and methods of manufacturing a plurality of laser rods such that each laser rod has two polished end surfaces and an optical axis that extends between the two polished end surfaces. The laser rod includes a gain material component that has a substantially prismatic shape. The gain... Agent: Ratnerprestia

20080240189 - Semiconductor laser: A semiconductor laser comprises: a substrate; an n-cladding layer disposed on the substrate; an active layer disposed on the n-cladding layer; a p-cladding layer disposed on the active layer and forming a waveguide ridge; and a diffraction grating layer disposed between the active layer and the n-cladding layer or the... Agent: Leydig Voit & Mayer, Ltd

20080240188 - Semiconductor laser chip and method of formation thereof: A method for forming a semiconductor laser chip is provided that can suppress layer discontinuity and simultaneously reduce fabrication variations in the light radiation angle in the horizontal direction. The method includes a step of forming, on an n-type GaAs substrate, a semiconductor element layer composed of a plurality of... Agent: Harness, Dickey & Pierce, P.L.C

20080240187 - Semiconductor laser device and method of manufacturing the same: A semiconductor laser device capable of improving planarity of cleavage planes of an optical waveguide thereof is obtained. This semiconductor laser device includes a support substrate, a semiconductor laser element portion having a pair of cavity facets provided with ends of an optical waveguide extending in a first direction and... Agent: Ditthavong Mori & Steiner, P.C.

20080240190 - Method of manufacturing semiconductor laser, semiconductor laser, optical pickup, optical disk device, method of manufacturing semiconductor device, semiconductor device, and method of growing nitride type group iii-v compound semiconductor layer: A method of manufacturing a semiconductor laser having an end face window structure, by growing over a substrate a nitride type Group III-V compound semiconductor layer including an active layer including a nitride type Group III-V compound semiconductor containing at least In and Ga, the method includes the steps of:... Agent: Sonnenschein Nath & Rosenthal LLP

20080240191 - Semiconductor optical device and manufacturing method thereof: In a p-type clad layer, not only a p-type dopant Zn but also Fe is doped. Its Zn concentration is 1.5×1018 cm−3 and the Fe concentration is 1.8×1017 cm−3. In a semi-insulating burying layer, Fe is doped as an impurity generating a deep acceptor level and the concentration thereof is... Agent: Westerman, Hattori, Daniels & Adrian, LLP

20080240192 - Surface emitting laser element and method of fabricating the same: A surface emitting laser element includes an active layer and a dielectric multilayer mirror formed with a plurality of dielectric layers having different refractive indices for reflecting a light generated in the active layer. At least one of boundaries between the dielectric layers is formed to have a predetermined surface... Agent: Oblon, Spivak, Mcclelland Maier & Neustadt, P.C.

20080240193 - Two-dimensional photonic crystal surface-emitting laser: The two-dimensional photonic crystal surface emitting laser according to the present invention includes a semiconductor substrate, a main laser section and a reflection film. The main laser section includes a lower cladding layer, an active layer, a two-dimensional photonic crystal layer, an upper cladding layer and a contact layer, which... Agent: Oliff & Berridge, PLC

20080240194 - Vertical cavity surface emitting laser and method of manufacturing it: A VSCEL capable of being easily and inexpensively manufactured and of stabilizing the polarization direction of laser light in one direction is provided. The Vertical Cavity Surface Emitting Laser includes a semiconductor lamination structure including a first multilayer film reflector, an active layer having a light emitting region, and a... Agent: Rader Fishman & Grauer PLLC

20080240195 - Semiconductor optical device: In a semiconductor optical device, the first conductive type semiconductor region includes a first semiconductor portion and a second semiconductor portion. The first and second regions of the first semiconductor portion are arranged along a predetermined plane. The second semiconductor portion is provided on the first region of the first... Agent: Smith, Gambrell & Russell

20080240196 - Surface emitting laser array, method for manufacturing the same, and semiconductor device: A surface emitting laser includes the plurality of surface emitting lasers including a first surface emitting laser, a second surface emitting laser adjacent to the first surface emitting laser, and a third surface emitting laser adjacent to the second surface emitting laser. Each of the plurality of surface emitting lasers... Agent: Advantedge Law Group, LLC

20080240197 - Method and apparatus for efficiently operating a gas discharge excimer laser: Systems and methods for efficiently operating a gas discharge excimer laser are disclosed. The excimer laser may include a chamber containing laser gases, first and second electrodes within the chamber, and a plurality of reflective elements defining an optical resonant cavity. The method may include setting the laser gases to... Agent: Knobbe Martens Olson & Bear LLP

20080240198 - Semiconductor laser having fabry-perot resonator: A semiconductor laser of the present invention is constructed such that the reflectance of the front facet coating film or the rear facet coating film dramatically decreases at wavelengths greater than a predetermined wavelength. This causes the loss of the semiconductor laser to dramatically increase at wavelengths greater than the... Agent: Leydig Voit & Mayer, Ltd

20080240199 - Target illuminator for night-vision devices: The invention relates to a target illuminator (1) for night-vision technology, comprising a laser source (2), the radiation power of the laser source being at least 15 mW, in particular from 100 to 500 mW, and the laser source being formed for emission of radiation having a wavelength λ of... Agent: Muncy, Geissler, Olds & Lowe, PLLC