Coherent light generators inventions 03/08

20080069156 - Solid state laser oscillator: Two end facets of a solid state laser medium function as resonating mirrors that cause a pumping light beam to resonate within the solid state laser medium, which becomes a resonator. A pumping means outputs the pumping light beam, having at least two longitudinal modes and a coherence length greater... Agent: Sughrue Mion, PLLC

20080069163 - Nitride-based semiconductor laser device: A nitride-based semiconductor laser device, includes: a first cladding layer of a first conductivity type; an active layer formed above the first cladding layer; an overflow-preventing layer of a second conductivity type formed on the active layer; and a second cladding layer of the second conductivity type formed above the... Agent: Oblon, Spivak, Mcclelland Maier & Neustadt, P.C.

20080069165 - Semiconductor laser diode with advanced window structure: The invention relates to a semiconductor laser diode structure with increased catastrophic optical damage (COD) power limit, featuring three sections, sometimes called windows, at the output facet of the diode. These include an optically transparent section, a current blocking section and a partially current blocking section.... Agent: Allen, Dyer, Doppelt, Milbrath & Gilchrist P.A.

20080069166 - Vertical-cavity surface-emitting laser: A vertical-cavity surface-emitting laser including an annular upper electrode disposed on a laser light exit surface, wherein an upper electrode aperture is formed therein and a light blocking layer is positioned at the center of the aperture formed in the upper electrode. The light blocking layer partially blocks laser light... Agent: Cha & Reiter, LLC

20080069168 - Vertical cavity surface emitting laser and fabricating method thereof: A vertical cavity surface emitting laser and a method for fabricating thereof are disclosed. The laser includes: a reflective laser formed at a center portion of a contact layer, and an upper electrode that is separated from a reflective lens and that encloses the reflective lens. The method for fabricating... Agent: Cha & Reiter, LLC

20080069170 - Pre-ionizer for pulsed gas-discharge laser: In a CO2 laser a pre-ionizer is assembled in a flange configured to be attached to a laser-gas enclosure of the laser over an aperture in a wall of the enclosure. An aperture in the base of the flange is aligned over the aperture in the enclosure wall. The aperture... Agent: Stallman & Pollock LLP

20080069172 - Electromagnetic energy distributions for electromagnetically induced mechanical cutting: Output optical energy pulses including relatively high energy magnitudes at the beginning of each pulse are disclosed. As a result of the relatively high energy magnitudes which lead each pulse, the leading edge of each pulse includes a relatively large slope. This slope is preferably greater than or equal to... Agent: Stout, Uxa, Buyan & Mullins LLP

20080069173 - External cavity optoelectronic device: A device contains at least one leaky waveguide layer, and has a transparent substrate, having a higher refractive index. The leakage loss of the waveguide exceeds the modal gain needed to initiate waveguide lasing. The leaky emission is going into the substrate at a certain angle, is reflected from the... Agent: Vitaly Shchukin

20080069157 - Driver laser for extreme ultra violet light source device: A driver laser for an extreme ultra violet light source device capable of suppressing self-oscillation light, amplifying a laser beam efficiently, and reducing a device size. The driver laser has an oscillator for generating a laser beam to output the generated laser beam, and at least one amplifier for amplifying... Agent: Wenderoth, Lind & Ponack, L.L.P.

20080069158 - Laser power control technique and apparatus for recording and reproducing data in and from optical disk under laser power control: A laser power control apparatus for controlling the output power of a semiconductor laser used to record and reproduce data in and from a recording medium is provided. The laser power control apparatus includes a controller configured to vary the peak output power level of the semiconductor laser in a... Agent: Dickstein Shapiro LLP

20080069159 - Laser system: The invention concerns a laser system with a frequency comb generator for generating a comb of optical frequencies having an offset frequency and a plurality of equidistant modes, wherein the laser system further preferably comprises at least one stabilizer for stabilizing the frequency comb onto a certain offset frequency and/or... Agent: Finnegan, Henderson, Farabow, Garrett & Dunner LLP

20080069160 - Laser diode package with an internal fluid cooling channel: A laser diode assembly has a laser diode. The laser diode has an emitting surface and a reflective surface opposing the emitting surface. The laser diode has first and second side surfaces between the emitting and reflective surfaces. A first electrically-insulating heat sink is attached to the first side surface... Agent: Daniel J. Burnham Nixon Peabody LLP

20080069161 - Thermally self-correcting gain modules and associated systems and methods: Aspects of the present invention are directed to the use of optical gain structures that include alternating layers of gain medium and transparent heat conductors in which the gain medium itself functions as a correction optic. The gain medium changes to an optimum or desired shape because of the thermal... Agent: Bainwood Huang & Associates LLC

20080069162 - Nitride-based semiconductor device and method of fabricating the same: A method of fabricating a nitride-based semiconductor device capable of reducing contact resistance between a nitrogen face of a nitride-based semiconductor substrate or the like and an electrode is provided. This method of fabricating a nitride-based semiconductor device comprises steps of etching the back surface of a first semiconductor layer... Agent: Mots Law, PLLC

20080069164 - Quantum cascade laser: A quantum cascade laser 1, which generates infrared light or other light of a predetermined wavelength by making use of intersubband transitions in a quantum well structure, is arranged by forming, on a GaAs substrate 10, an AlGaAs/GaAs active layer 11 having a cascade structure in which quantum well light... Agent: Drinker Biddle & Reath (dc)

20080069167 - Printing with laser activation: Apparatus for implementing a thermal printing technique onto thermally sensitive print media use one or more laser arrays to provide optical heating. A technique for alignment of multiple monolithic arrays onto a common carrier such that the constant pitch of parallel output beams is maintained as described.... Agent: Mccarter & English , LLP Stamford Office

20080069169 - Spatial bandgap modifications and energy shift of semiconductor structures: Semiconductor substrate is disclosed having quantum wells having first bandgap, and quantum wells having second bandgap greater than first bandgap. Semiconductor structure is disclosed comprising substrate having quantum wells having given bandgap, other quantum wells modified to bandgap greater than given bandgap. Semiconductor substrate is disclosed comprising wafer having quantum... Agent: Fish & Richardson PC

20080069171 - High-order harmonic generation in a capillary discharge: A pre-ionized medium created by a capillary discharge results in more efficient use of laser energy in high-order harmonic generation (HHG) from ions. It extends the cutoff photon energy, and reduces the distortion of the laser pulse as it propagates down the waveguide. The observed enhancements result from a combination... Agent: Jennifer L. Bales

20080063016 - Thermal compensation in semiconductor lasers: The present invention relates to methods for modulating a semiconductor laser and wavelength matching to a wavelength converter using monolithic micro-heaters integrated in the semiconductor laser. The present invention also relates to wavelength matching and stabilization in laser sources in general, without regard to whether the laser is modulated or... Agent: Corning Incorporated

20080063017 - Laser diode array mounting: An optically stacked, laser diode array module (10) includes a mounting block (100) having a series of stepped, parallel diode mounting surfaces (101) on one face of the block, each diode mounting surface cooperating with a respective pair of reference surfaces (102, 103) of the block to form a respective... Agent: Fish & Richardson PC

20080063021 - Multibeam laser apparatus and image forming device using the same: A multibeam laser apparatus and an image forming device using the same. The multibeam laser beam apparatus includes a common electrode unit, a plurality of light source units to emit light using the common electrode unit, and an isolating unit to interconnect the common electrode unit and the plurality of... Agent: Stanzione & Kim, LLP

20080063015 - Compact tunable high-efficiency entangled photon source: A compact, tunable, high-efficiency entangled photon source system that utilizes first and second periodically poled waveguides rather than bulk media in order to decrease the required pump power by up to several orders of magnitude. The first and second waveguides are arranged in respective arms of an interferometer. Each waveguide... Agent: OpticusIPLaw, PLLC

20080063018 - Laser diode driver able to precisely control the driving current: The present invention provides a laser diode driver (LD-driver) able to precisely control the driving current reducing the influence of the overshoot and undershoot of the monitored signal. The LD-driver includes a photodiode (PD), an I/V-converter (I/V-C), a comparator, an integrator, a processing unit, and a current source. The PD... Agent: Venable LLP

20080063019 - Semiconductor laser device: A semiconductor laser device includes: an active layer having a single or multiple quantum well structure including a well layer of InwGa1-wN (0.08≦w≦0.2) and a barrier layer of InbGa1-bN (0.01≦b≦0.05); a cladding layer of AlyGa1-yN (0≦y≦0.1) provided on the active layer, the cladding layer including a ridge portion extending like... Agent: Oblon, Spivak, Mcclelland Maier & Neustadt, P.C.

20080063020 - Semiconductor laser device: The present invention provides a semiconductor laser excellent in the current injection efficiency. In an inner stripe type semiconductor laser according to the present invention, a p type cladding layer 309 has a superlattice structure composed of GaN layers and Al0.1Ga0.9N layers, which are alternately layered on each other. The... Agent: Sughrue Mion, PLLC

20080063022 - Semiconductor laser and tunable fluid lenses: According to one aspect of the present invention, a semiconductor laser comprising a laser chip, a light wavelength conversion device, and a tunable lens according to the present invention is provided. The tunable lens comprises first and second fluid lens components positioned to direct light from the laser chip to... Agent: Corning Incorporated

20080063023 - Optical scanning apparatus: To provide an optical scanning apparatus which is strong against an external stress while suppressing an increase in the number of parts, an inserting portion 6 into which a laser light source unit 1 can be inserted is provided for a frame member 5. In a state where the laser... Agent: Fitzpatrick Cella Harper & Scinto

20080056311 - Light-emitting element: A light-emitting element includes a light amplification unit and an external resonator. The light amplification unit has a function of amplifying light. The external resonator is connected to the light amplification unit. The external resonator includes a planar light waveguide and a stress application unit. The planar light waveguide is... Agent: Young & Thompson

20080056312 - Wavelength conversion laser device and nonlinear optical crystal used in the same: A wavelength conversion laser device and a nonlinear optical crystal used in the same. The wavelength conversion laser device includes a laser light source for emitting a predetermined wavelength beam, and a laser medium for exciting the predetermined wavelength beam from the laser light source into a fundamental beam. The... Agent: Mcdermott Will & Emery LLP

20080056313 - Wavelength variable laser: The present invention provides a directly modulatable wavelength variable laser that enables long distance and large volume communication with a simple and compact configuration. The wavelength variable laser includes a semiconductor optical amplifier, an optical filter, and a frequency-amplitude converter. The semiconductor optical amplifier produces optical gain of the light... Agent: Mcginn Intellectual Property Law Group, PLLC

20080056314 - High-power laser-diode package system: A system includes a laser-diode bar comprising an emitting surface and a reflective surface opposing the emitting surface. The laser-diode bar includes a positive-side surface and a negative-side surface opposing the positive-side surface for conducting electrical energy through laser-diode bar. The system also includes a heat sink thermally coupled to... Agent: Daniel J. Burnham Jenkens & Gilchrist, A Professional Corporation

20080056315 - Semiconductor laser device: There is provided a semiconductor laser device which has a semiconductor laser element of a large cavity length and in which an outside shape and outside dimensions of a package are generally identical to those of the conventional one. A mounting portion 10 of a first lead 2 for the... Agent: Nixon & Vanderhye, PC

20080056317 - Laser driver circuit and optical disc apparatus having the laser driver circuit: To improve a recording speed and an optical waveform quality while lower power consumption in the laser driver circuit is achieved. In an optical disc apparatus including a laser driver circuit according to the present invention, a laser diode emits a laser light a power supply regulator supplies a predetermined... Agent: Knobbe Martens Olson & Bear LLP

20080056318 - Laser light output control apparatus and image forming apparatus: One aspect of the present invention can include a laser light output control apparatus having a plurality of laser light output control systems including a laser light source capable of receiving supplying of current via a power supplying path from a power source and irradiating laser light, a photo-detecting device... Agent: Banner & Witcoff, Ltd. Attorneys For Client Nos. 0166889, 006760

20080056319 - Semiconductor laser device and manufacturing method thereof: A semiconductor laser device includes a chip obtained from a substrate and a semiconductor multi-layer formed on the substrate. The semiconductor multi-layer is formed from a plurality of semiconductor layers of a semiconductor material having a hexagonal structure, and includes a stripe-shaped wave guide portion. The chip includes two chip... Agent: Mcdermott Will & Emery LLP

20080056320 - Semiconductor laser apparatus: A novel semiconductor laser device is provided which can suppress internal optical absorption even when In is used as a material for a semiconductor multilayer mirror containing a nitride. The semiconductor laser device has two mirrors disposed to face each other, and an active layer disposed therebetween. At least one... Agent: Fitzpatrick Cella Harper & Scinto

20080056322 - Nitride semiconductor laser element and method for manufacturing same: A nitride semiconductor laser element comprises a nitride semiconductor substrate and a nitride semiconductor layer laminated thereon, wherein the nitride semiconductor substrate has a high dislocation density region and a low dislocation density region containing lower dislocation than that of the high dislocation density region, and has at least one... Agent: GlobalIPCounselors, LLP

20080056323 - Vcsel, manufacturing method thereof, module, light sending device, optical spatial transmission device, light sending system, and optical spatial transmission system: A VCSEL includes a substrate, a first semiconductor multilayer of a first conductivity-type, an active layer, a second semiconductor multilayer of a second conductivity-type, a contact layer, each of the layers stacked on the substrate. The second semiconductor multilayer constitutes a resonator together with the active layer and the first... Agent: Fildes & Outland, P.C.

20080056325 - Gas laser apparatus, and method and device for monitoring blower: A gas laser apparatus including a laser oscillating section including a blower forcibly circulating a medium gas in a medium circuit, and a blower monitoring section monitoring a maintenance state of the blower. The blower includes a lubricant storage chamber storing a lubricant, and a lubricant monitoring chamber connected to... Agent: Drinker Biddle & Reath (dc)

20080056316 - Fault tolerant laser diode package: A laser diode package (10) according to the present invention is tolerant of short-circuit and open-circuit failures. The laser diode package (10) includes a laser diode bar (12), a forward-biased diode (14), a heat sink (18), and a lid (16) which may have fusible links (86). The laser diode bar... Agent: Nixon Peabody, LLP

20080056321 - Surface emitting laser element, surface emitting laser array, optical scanning apparatus, image forming apparatus, and optical communication system: A vertical cavity surface emitting laser element is disclosed that includes a substrate, a first semiconductor multilayer reflector including plural pairs of layers having differing refractive indexes and thermal resistances, a resonator region including an active layer, and a second semiconductor multilayer reflector including plural pairs of layers having differing... Agent: Cooper & Dunham, LLP

20080056324 - Method of producing multi-wavelength semiconductor laser device: A method for producing a multi-wavelength semiconductor laser device includes the steps of: forming a nitride epitaxial layer on a substrate for growth of a nitride single crystal; separating the nitride epitaxial layer from the substrate; attaching the separated nitride epitaxial layer to a first conductivity-type substrate; selectively removing the... Agent: Lowe Hauptman Ham & Berner, LLP

20080056326 - Process and apparatus for laser selective separation: The present invention provides a laser selective separation apparatus for separating two bonded parts being bonding together at a joint by bonding material. The present invention further provides a process for separating two bonded parts being bonding together at a joint by bonding material.... Agent: Lawrence Y.d. Ho & Associates Pte Ltd