Coherent light generators inventions 10/07

20070248127 - Optical-element-cooling devices and exposure apparatus comprising optical elements including same: Cooling devices are disclosed for use with mirrors and other optical elements subject to heating during use, especially as used in lithographic exposure apparatus. The cooling devices pose minimal risk of damage caused by coolant leaks, provide simplified maintenance, and reduce vibrations while providing good cooling performance. An exemplary cooling... Agent: Klarquist Sparkman, LLP

20070248138 - Method and system for a high power low-coherence pulsed light source: A high power pulsed optical source includes a multi-port optical circulator and a seed source coupled to a first port of the multi-port optical circulator. The seed source is adapted to provide amplified spontaneous emission. The high power pulsed optical source also includes a first reflective device coupled to a... Agent: Townsend And Townsend And Crew, LLP

20070248124 - All-optical logic gates using nonlinear elements - claim set vi: An all-optical logic gates comprises a nonlinear element such as an optical resonator configured to receive optical input signals, at least one of which is amplitude-modulated to include data. The nonlinear element is configured in relation to the carrier frequency of the optical input signals to perform a logic operation... Agent: Alston & Bird LLP

20070248125 - Surface emitting laser diode: A surface emitting semiconductor laser device which can be manufactured easily and inexpensively and in which the direction of polarization of a laser beam can be controlled into a fixed direction. An oxidizing treatment is applied to a current confinement layer to form a current passage region in a rectangular... Agent: Sonnenschein Nath & Rosenthal LLP

20070248126 - Scribing sapphire substrates with a solid state uv laser: A process and system scribe sapphire substrates, by performing the steps of mounting a sapphire substrate, carrying an array of integrated device die, on a stage such as a movable X-Y stage including a vacuum chuck; and directing UV pulses of laser energy directed at a surface of the sapphire... Agent: Haynes Beffel & Wolfeld LLP

20070248128 - Double-sided monolithically integrated optoelectronic module with temperature compensation: An optoelectronic module includes a semiconductor structure with a substrate having a first side and a second side, a first layered structure deposited on the first side, and a second layered structure deposited on the second side. The optoelectronic module also includes driver circuitry fabricated of the first layered structure... Agent: Brown & Michaels, PC 400 M & T Bank Building

20070248129 - Laser power control apparatus: In a laser power control apparatus for controlling a laser power of a combination drive, first laser light Lc applied onto a first optical disk and second laser light Ld applied onto a second optical disk is collected by one photodetector 8.... Agent: Mcdermott, Will & Emery

20070248130 - Optical transmitter with a digitally controlled bias and modulation currents for a laser diode: The present invention is to provide an optical transmitter that installs a laser diode and a circuit to control currents supplied to the laser diode, and reduces the size of the control circuit. The transmitter includes an LD, an LD-Driver, a monitor PD, and a control unit that outputs two... Agent: Smith, Gambrell & Russell

20070248131 - High efficiency intersubband semiconductor lasers: An intersubband quantum cascade laser structure includes multiple coupled laser stages, wherein each stage has a multilayer structure including an electron injector, an active region with at least one quantum well, and an electron reflector. Electrons injected from the injector into the active region at a high energy level relax... Agent: Foley & Lardner LLP

20070248132 - Light emitting element and method of manufacturing the same: A method of manufacturing a semiconductor element by forming, on a substrate, columnar crystals of a nitride-base or an oxide-base compound semiconductor, and by using the columnar crystals, wherein on the surface of the substrate, the columnar crystals are grown while ensuring anisotropy in the direction of c-axis, by controlling... Agent: Sughrue Mion, PLLC

20070248133 - Optical pickup device, semiconductor laser device and housing usable for the optical pickup device, and method of manufacturing semiconductor laser device: A semiconductor laser device includes a first lead having a plate-like mounting portion on which a semiconductor laser chip is mounted and a lead portion extending from the mounting portion, a second lead extending along the lead portion of the first lead, and a retention portion made of an insulative... Agent: Nixon & Vanderhye, PC

20070248134 - Optical semiconductor device having diffraction grating: An optical semiconductor device includes: a waveguide structure including layers grown over a semiconductor substrate, having a width defined by sidewalls formed by etching the layers, and including a wide, a narrow, and an intermediate width portion, formed along a propagation direction; and a diffraction grating formed on the sidewalls... Agent: Kratz, Quintos & Hanson, LLP

20070248135 - Quantum well lasers with strained quantum wells and dilute nitride barriers: In accordance with the present invention, GaAs-based optoelectronic devices have an active region that includes a well layer composed of a compressively-strained semiconductor that is free, or substantially free, of nitrogen disposed between two barrier layers composed of a nitrogen- and indium-containing semiconductor.... Agent: Foley & Lardner LLP

20070248136 - Laser apparatus having multiple synchronous amplifiers tied to one master oscillator: Laser apparatus and methods involving multiple amplified outputs are disclosed. A laser apparatus may include a master oscillator, a beam splitter coupled to the master oscillator, and two or more output heads optically coupled to the beam splitter. The beam splitter divides a signal from the master oscillator into two... Agent: Joshua D. Isenberg Jdi Patent

20070248137 - Novel rotary disk, rotary disk module, and rotary disk laser and amplifier configurations: There is provided a rotary disk laser module including disk comprised of at least one lasing material. The disk further includes a first surface, a second surface and a gain region. The gain region contains excited lasing material and extends between the first and second surfaces. The lasing material may... Agent: Stetina Brunda Garred & Brucker

20070248139 - Multi-channel laser pump source for optical amplifiers: An optical assembly, such as a multiple output diode laser pump source for EDFAs, is formed by pressing an optical array emitter chip against a standoff structure protruding from a submount such that the emitter chip deforms to match the curvature of the standoff structure. An IO chip is also... Agent: Gemfire C/o Haynes Beffel & Wolfeld LLP

20070242710 - Laser apparatus: A laser system with a solid state laser medium, having a broad oscillation spectrum with improved absorption efficiency of the laser medium for excitation light. The system includes: a resonator; a solid state laser medium, disposed in the resonator, having optical anisotropy; and an excitation unit for inputting excitation light... Agent: Sughrue Mion, PLLC

20070242718 - Illuminating device, electro-optical device, and electronic apparatus: An illuminating device includes a plurality of light sources, a light guide plate that has plate surfaces on front and rear sides and a plurality of end faces formed around the plate surfaces, receives light emitted from the plurality of light sources through a light incident surface, which is at... Agent: Harness, Dickey & Pierce, P.L.C

20070242717 - Two-dimensional surface emitting laser array, multi-beam scanning unit employing the same, and image forming apparatus employing the multi-beam scanning unit:

20070242705 - Device and method for high-energy particle pulse generation: A device for generating a high-energy particle pulse is provided which comprises a laser system producing laser pulses with pulse length shorter than 100 fs (femtoseconds), and capable to be focused to peak intensities greater than 10A18 W/cmA2, preferred greater than 10A20 W/cmA2 (watts per centimeter squared), a device for... Agent: Blakely Sokoloff Taylor & Zafman

20070242706 - Tunable laser source with optical wavelength addressing: An optical apparatus including a tunable master laser from which all or some of a beam is injected into at least one “slave ” laser having a cavity with an amplifier medium and a dynamic holographic medium that forms a self-adapted spectral filter to maintain oscillation of the slave laser... Agent: Ip Group Of Dla Piper US LLP

20070242707 - Multiple wavelength laser arrangement: A laser arrangement comprising a first and a second resonant cavity for generating a first and a second fundamental wavelength. A first and a second non-linear region are provided in the second cavity for sum-frequency mixing of the radiation generated in the first cavity and in the second cavity, and... Agent: Buchanan, Ingersoll & Rooney PC

20070242708 - Method for designing a semiconductor laser with intracavity reflecting features, semiconductor laser method of fabrication thereof: A Fabry-Pérot (FP) laser device (1) has an n-type substrate (2), an active region (3), a p-type cladding (4), an insulator (5), and a contact (6). The cladding (4) comprises a ridge (7) having a number of slots (8). The slots (8) cause a partial longitudinal reflection of the light.... Agent: Jacobson Holman PLLC

20070242709 - Laser pulse fault detection method and system: An optical navigation system for driving a laser device with a laser pulse fault detection employs a controller, a laser driver and a laser pulse fault detector. In operation, the controller provides the laser pulse train signal to the laser driver and the laser pulse fault detector. In response thereto,... Agent: Kathy Manke Avago Technologies Limited

20070242711 - Compensation for dynamic thermal effects in fast tunable lasers: Methods, systems, and apparatuses for the compensation of dynamic thermal effects in fast tunable lasers are related in the present application. In particular, certain embodiments of the present invention may be useful for controlling currents to achieve various current-controlled characteristics in fast tunable lasers. Thus, certain systems, methods, and apparatuses... Agent: Squire, Sanders & Dempsey L.L.P.

20070242712 - Semiconductor laser module and method for controlling the same: The present invention is to provide a laser module that includes a semiconductor laser diode that is raised in a temperature without degrading the heat dissipating efficiency to improve the operation and the performance of the laser diode. The laser module of the invention, having a co-axial package, includes a... Agent: Fish & Richardson P.C.

20070242713 - Laser based on quantum dot activated media with forster resonant energy transfer excitation: A laser gain medium. The novel laser gain medium includes a host material, a plurality of quantum dots dispersed throughout the host material, and a plurality of laser active ions surrounding each of the quantum dots. The laser active ions are disposed in close proximity to the quantum dots such... Agent: Raytheon Company Patent Docket Administration

20070242714 - Solid-state laser with spatially-tailored active ion concentration using valence conversion with surface masking and method: A material having a surface and a dopant in the material distributed whereby the material has a spatially variant optical flux density profile. In accordance with the invention, tailored non-uniform gain profiles within a Yb:YAG laser component (rod, slab, disc, etc.) are achieved by a spatial material modification in the... Agent: Raytheon Company Intellectual Property & Licensing

20070242715 - Mode and polarization control in vcsels using sub-wavelength structure: This invention relates to a vertical-cavity surface-emitting laser (VCSEL) comprising a bottom mirror structure, a top mirror structure, an active layer sandwiched between the top mirror structure and the bottom mirror structure; and at least one asymmetric sub-wavelength structure arranged in on or at least adjacent to the mirror structure... Agent: Harness, Dickey & Pierce, P.L.C

20070242716 - High power vcsels with transverse mode control: A single mode high power laser device such as a VCSEL is formed with two oxide apertures, one on each side of the active region or cavity. The sizes of the apertures and the distances from the apertures to the cavity center are chosen or optimum, near-Gaussian current density distribution.... Agent: Mcdonnell Boehnen Hulbert & Berghoff LLP

20070242719 - Optical manipulator illuminated by patterned organic microcavity lasers: The present disclosure relates to an optical device and technique for manipulating microscopic objects. The device includes a support to locate microscopic objects. A laser array assembly that includes a plurality of organic laser devices generates an image onto the support via an objective lens. A control device controls the... Agent: Pamela R. Crocker, Patent Legal Staff Eastman Kodak Company

20070242720 - Multi-pass optical cell with actuator for actuating a reflective surface: A multi-pass optical cell with an actuator for actuating a reflective surface is provided. In one preferred embodiment, an apparatus is provided comprising a first reflective surface, a second reflective surface, and a support structure supporting the first and second reflective surfaces. The support structure positions the first and second... Agent: Brinks Hofer Gilson & Lione

20070237195 - Light source, method for controlling light source, and method for replacing light source: In a light source constructed from a plurality of laser diodes, the overall light output of the light source is controlled based on calibration data which is generated for each pair consisting of any one of the plurality of laser diodes and a dedicated control board for controlling the light... Agent: Paul And Paul

20070237197 - Semiconductor light emitting device: A semiconductor light emitting device includes a light emitting element, a heat radiating member, and a submount interposed between the light emitting element and the heat radiating member. The light emitting element is fixed to heat radiating member by a brazing material with the submount interposed. The heat radiating member... Agent: Morrison & Foerster LLP

20070237200 - Semiconductor laser diode array: A semiconductor laser diode array is provided. The semiconductor laser diode array includes: a lower semiconductor laser diode chip having a dual structure including a lower substrate, a first laser generating region disposed on the lower substrate, and a second laser generating region disposed on the lower substrate and separated... Agent: Buchanan, Ingersoll & Rooney PC

20070237190 - High-power er: yag laser: An Er:YAG laser includes an Er:YAG crystal medium and optical pumping element and is adapted to oscillate at a wavelength of 2.94 μm. The optical pumping element irradiates pumping light pulses onto a plurality of regions along a longitudinal direction of the Er:YAG crystal medium from its side at timings... Agent: Young & Thompson

20070237191 - Devices for high power, high-repetition rate, broadly tunable coherent radiation, and its applications: The present application is directed to various embodiments of laser systems which include a laser oscillator and a pump source configured to produce coherent light at high repetition rates and with short pulse durations, wherein the output from the laser oscillator is then amplified in a laser amplifier, which includes... Agent: Biotechnology Law Group C/o Portfolioip

20070237192 - Confocal pulse stretcher: A gas discharge laser system producing a laser output pulse and a method of operating such a system is disclosed which may comprise a pulse stretcher which may comprise a laser output pulse optical delay initiating optic directing a portion of the laser output pulse along a laser system output... Agent: Cymer Inc Legal Department

20070237193 - Electro-absorption modulated laser using coupling for chirp correction: An electroabsorption modulated laser (EML) which uses coupling for chirp correction is disclosed.... Agent: Volentine & Whitt PLLC

20070237194 - Systems and methods for real-time compensation for non-linearity in optical sources for analog signal transmission: The present invention provides a compact analog directly modulated laser configuration that is suitable for use in the field that uses electrical feedback to compensate for non-linearity in real time, such that no matter how the LI curve changes, the electrical feedback compensates for non-linearity by amplifying a portion of... Agent: Clements Walker

20070237196 - Light-emitting module installing thermo-electric controller: There is provided a light-emitting module which suppresses wavelength drift. A light-emitting module according to the invention includes a stem and a cap fixed to the upper surface of the stem. A thermo-electric cooler is mounted on the stem and a base is mounted on the thermo-electric cooler. A laser... Agent: Mcdermott Will & Emery LLP

20070237198 - Vertical-stacked coupled quantum-dot vertical cavity surface emitting laser: A vertical-stacked coupled quantum-dot vertical cavity surface emitting laser includes a semiconductor substrate, a lower distributed Bragg reflector, a first wave guide layer, an emitting layer, a second wave guide layer and an upper distributed Bragg reflector. The emitting layer is formed by multiple Quantum-Dot Vertically Stacked layers, which are... Agent: Harness, Dickey & Pierce, P.L.C

20070237199 - Semiconductor laser device and manufacturing method thereof: In a monolithic dual-laser semiconductor laser device capable of high power output, a window structure for each of laser elements is formed through a common step, thereby improving the device reliability. The semiconductor laser device has an infrared laser element 110 and a red laser element 120 monolithically integrated on... Agent: Mcdermott Will & Emery LLP

20070230519 - Green optical module: A green optical module is disclosed. The module includes a harmonic generator for generating a second harmonic, a laser light source for generating light for pumping the harmonic generator and at least two heat sinks spaced from each other. The harmonic generator and the laser light source are disposed on... Agent: Cha & Reiter, LLC

20070230518 - Optical signal waveform shaping apparatus: An optical signal and pump light are input to a nonlinear optical medium. In the nonlinear optical medium, the optical signal is amplified with a nonlinear effect caused by the pump light. A monitor circuit monitors parametric gain in the nonlinear optical medium. A first power controller increases input power... Agent: Bingham Mccutchen LLP

20070230522 - Optical semiconductor device: An optical semiconductor device has a heater, an optical waveguide layer, a first electrode and a second electrode. The heater is provided on a first semiconductor region and has more than one heater segment coupled or separated to each other. The optical waveguide layer is provided in the first semiconductor... Agent: Westerman, Hattori, Daniels & Adrian, LLP

20070230521 - Optical semiconductor device and controlling method of the same: An optical semiconductor device includes a wavelength-tunable semiconductor laser chip, a mount carrier, a first temperature sensor and a wire. The wavelength-tunable semiconductor laser chip has a first optical waveguide and a second optical waveguide. The second optical waveguide has a heater on a surface thereof and is optically coupled... Agent: Kratz, Quintos & Hanson, LLP

20070230523 - Optical semiconductor device, laser chip and laser module: An optical semiconductor device has a semiconductor substrate, an optical semiconductor region and a heater. The optical semiconductor region is provided on the semiconductor substrate and has a width smaller than that of the semiconductor substrate. The heater is provided on the optical semiconductor region. The optical semiconductor region has... Agent: Westerman, Hattori, Daniels & Adrian, LLP

20070230526 - Semiconductor laser module driven in shunt-driving configuration: The present invention is to provide a laser module stably operable with less jitter in high frequencies. The laser module of the invention provides a semiconductor laser diode and a current-shunting device that shunts the current flowing in the LD by responding the input modulation signal. A path where the... Agent: Venable LLP

20070230531 - Arrangement for generating extreme ultraviolet radiation by means of an electrically operated gas discharge: The object of the invention in an arrangement for generating extreme ultraviolet radiation by an electrically operated gas discharge is to achieve an improvement in the adjustment of the layer thickness when applying a molten metal to the electrode surfaces and to provide better protection against the uncontrolled spreading of... Agent: Reed Smith, LLP Attn: Patent Records Department

20070230533 - Laser module: Disclosed is a laser module for generating laser light without a wavelength shift during a direct modulation of high frequency. The laser module includes: a laser light source for generating a first light; a nonlinear crystal for secondary harmonic generation for wavelength-converting the first light into a second light; and... Agent: Cha & Reiter, LLC

20070230517 - Fiber laser oscillator and fiber laser processing apparatus: An end cap is formed as a substantially cylindrical body having substantially the same diameter as an external diameter of a retaining unit of an oscillation fiber; a base end surface is integrally fusion-welded or fusion-bonded to one end surface of the oscillation fiber; and a leading end surface is... Agent: Wenderoth, Lind & Ponack, L.L.P.

20070230520 - System, method, and apparatus to provide laser beams of two or more wavelengths: A system, apparatus, and method may provide laser beams of two or more wavelengths from diode pumped solid-state laser sources (220, 222, 224). The beam paths of these laser beams with different wavelengths, which are generated by the laser sources (220, 222, 224), may be aligned along a common optical... Agent: Pearl Cohen Zedek Latzer, LLP

20070230524 - Laser power control unit and method for performing auto power control: A laser power control unit used for controlling the laser power of an optical pick-up unit (OPU) is provided. The laser power control unit includes: at least one analog-to-digital converter (ADC) electrically coupled to the OPU for transferring a front photodiode output signal into a digital feedback signal; and at... Agent: North America Intellectual Property Corporation

20070230525 - Eye-safe laser navigation sensor: One embodiment relates to an optical navigation apparatus which provides fault-tolerant limitation of laser output power. The apparatus includes a diode laser and a current source interconnected with the diode laser. Two independent circuits in the current source are configured to limit current flowing through the diode laser. Another embodiment... Agent: Okamoto & Benedicto, LLP

20070230527 - Fundamental-wave light source and wavelength converter: A reflection element 3 disposed in an optical waveguide element 2 returns a part of light to a semiconductor laser diode element 1 so that the semiconductor laser diode element 1 oscillates in a coherent collapse mode, and a semiconductor light amplifier 7 is optically coupled to the optical waveguide... Agent: Birch Stewart Kolasch & Birch

20070230528 - Semiconductor laser device and semiconductor laser element array: The present invention relates to, for example, a semiconductor laser element capable of emitting laser beams having a small emitting angle efficiently with a simpler structure. The semiconductor laser element includes a first semiconductor portion, an active layer, and a second semiconductor portion. The first semiconductor portion has a ridge... Agent: Drinker Biddle & Reath (dc)

20070230530 - Semiconductor laser device and method for manufacturing the same: A semiconductor laser device including the following: a first conductivity type semiconductor substrate; a first conductivity type cladding layer disposed on the semiconductor substrate; an active layer disposed on the first conductivity type cladding layer; a second conductivity type first cladding layer disposed on the active layer; a second conductivity... Agent: Hamre, Schumann, Mueller & Larson P.C.

20070230529 - Surface-emitting type semiconductor laser: A surface-emitting type semiconductor laser includes: a first mirror; an active layer formed above the first mirror; a second mirror formed above the active layer; a current constricting section formed above or below the active layer; and a diffraction grating formed above the active layer and arranged in a plane... Agent: Oliff & Berridge, PLC

20070230532 - Display laser light source: A display light source (230) includes a gain media (232), an output reflector (246), and a wavelength converter (244) that cooperate to generate a source output beam (260). The gain media (232) generates a media output beam (247) that exits an output facet (232B) of the gain media (232). The... Agent: The Law Office Of Steven G Roeder

20070230534 - Grating enhanced solid-state laser amplifiers: A novel method and apparatus for suppressing ASE and parasitic oscillation modes in a high average power laser is introduced. Such an invention, as disclosed herein, uses diffraction gratings to increase gain, stored energy density, and pumping efficiency of solid-state laser gain media, such as, but not limited to rods,... Agent: Michael C. Staggs Attorney For Applicants