Coherent light generators inventions 09/08

20080232406 - Optical continuum source including light generation beyond wavelength edges of continuum: An optical continuum source is formed that is used to generate both a continuum and one or more light peaks outside the bandwidth of the continuum. In particular, one or more fiber Bragg gratings exhibiting a resonant wavelength less than the short wavelength edge (or greater than the long wavelength... Agent: Wendy W. Koba

20080232407 - Utilization of yb: and nd: mode-locked oscillators in solid-state short pulse laser system: An optimized Yb: doped fiber mode-locked oscillator and fiber amplifier system for seeding Nd: or Yb: doped regenerative amplifiers. The pulses are generated in the Yb: or Nd: doped fiber mode-locked oscillator, and may undergo spectral narrowing or broadening, wavelength converting, temporal pulse compression or stretching, pulse attenuation and/or lowering... Agent: Sughrue Mion, PLLC

20080232408 - Method and apparatus for stabilizing and tuning the bandwidth of laser light: According to aspects of an embodiment of the disclosed subject matter, method and apparatus are disclose that ma y comprise adjusting a differential timing between gas discharges in the seed laser and amplifier laser for bandwidth control, based on the error signal, or for control of another laser operating parameter... Agent: William C. Cray Cymer, Inc., Legal Dept.

20080232411 - Bragg grating structure: A Bragg grating has a local reflection strength which varies with position along the length of the grating so as to generate a non-uniform wavelength reflection spectrum, enabling compensation for a non-uniform gain profile of the gain section of a tunable laser. In another aspect, a Bragg comb grating is... Agent: Mark D. Saralino (general) Renner, Otto, Boisselle & Sklar, LLP

20080232410 - Methods, arrangements and apparatus for utilizing a wavelength-swept laser using angular scanning and dispersion procedures: Exemplary systems and methods for filtering an electromagnetic radiation can be provided. For example, at least one first arrangement can be provided which is capable of receiving at least one first electro-magnetic radiation and forwarding at least one second electro-magnetic radiation at different angles with respect to a direction of... Agent: Dorsey & Whitney LLP Intellectual Property Department

20080232409 - Tunable laser: [Means for Solving Problems] A tunable laser (10) comprises a double ring resonator (11) where ring resonators (111, 112) of different sizes are coupled through a directional coupler (122), an LD side waveguide (13) connected at one end (131) to the ring resonator (111) through a directional coupler (123), a... Agent: Mcginn Intellectual Property Law Group, PLLC

20080232412 - Surface-emitting laser and laser projector: A surface emitting laser (100a) includes an active layer (3) disposed on a semiconductor substrate (2a), and a pair of upper and lower electrodes (5,6) for injecting carriers into the active layer (3). The plane surface of the lower electrode (6) is shaped into a star so that injection of... Agent: Wenderoth, Lind & Ponack L.L.P.

20080232414 - Light emitting element, method for manufacturing light emitting element, light emitting element assembly, and method for manufacturing light emitting element assembly: A method for manufacturing a light emitting element includes the steps of (A) forming sequentially a first compound semiconductor layer having a first conduction type, an active layer, and a second compound semiconductor layer having a second conduction type on a substrate, (B) forming a plurality of point-like hole portions... Agent: Sonnenschein Nath & Rosenthal LLP

20080232413 - Multiple phonon resonance quantum cascade lasers: Quantum-cascade lasers are provided with an active section in which relaxation of carriers from a lower laser level is provided by three or more phonon-assisted transitions to levels within the active section whose energies are below the energy of the lower laser level. The gain region of the laser consists... Agent: Pietragallo Gordon Alfano Bosick & Raspanti LLP

20080232415 - Laser diode: A laser diode capable of operating at high temperature by preventing carrier overflow is provided. A laser diode includes an AlGaInP-based laminate configuration including at least a lower cladding layer, an active layer and an upper cladding layer in this order, wherein the AlGaInP-based laminate configuration receives a larger compressive... Agent: Sonnenschein Nath & Rosenthal LLP

20080232416 - Light emitting device: A light emitting device includes a nitride semiconductor light emitting element provided with a group III nitride semiconductor laminating structure and a laser. The group III nitride semiconductor laminating structure has a non-polar plane or a semi-polar plane as a principal plane for crystal growth and includes a multiple-quantum well... Agent: Rabin & Berdo, PC

20080232417 - Semiconductor light emitting device and fabrication method for semiconductor light emitting device: A semiconductor light emitting device includes a lower cladding layer, an active layer, and an AlGaAs upper cladding layer mounted on a GaAs substrate. The semiconductor light emitting device has a ridge structure including the AlGaAs upper cladding layer. The semiconductor light emitting device further includes an InGaAs etching stop... Agent: Westerman, Hattori, Daniels & Adrian, LLP

20080232418 - Surface emitting laser: A surface emitting laser includes a substrate, a first Bragg reflector layer formed on the substrate, an active layer formed on the first Bragg reflector layer and having a light-emitting region, a second Bragg reflector layer formed on the active layer to emit light from the surface in the direction... Agent: Foley And Lardner LLP Suite 500

20080232419 - Laser array chip, laser module, manufacturing method for manufacturing laser module, manufacturing method for manufacturing laser light source, laser light source, illumination device, monitor, and projector: A laser array chip includes: a plurality of emission sections emitting laser lights; and a weak section formed in a portion in the thickness direction of at least a portion of the areas between the emission sections, whose strength is weaker than the strength of areas in which the emission... Agent: Oliff & Berridge, PLC

20080232420 - Light emitting diodes and lasers diodes with color converters: The present invention relates to a light emitting diode (LED) or a laser diode (2) with a functional element (3) mounted on a light out-coupling side of the LED or laser diode (2) wherein the functional element (3) comprises a provision (5) that allows for electrically contacting the LED or... Agent: Philips Intellectual Property & Standards

20080232421 - Method and apparatus for forming a plurality of laser beams with ultraviolet wavelength, and laser machining apparatus: The invention provides a method and an apparatus for forming a plurality of ultraviolet-wavelength laser beams, and a laser machining apparatus, in which the machining efficiency can be improved due to easy maintenance and inspection while deterioration of wavelength conversion means can be prevented to reduce the running cost. A... Agent: Crowell & Moring LLP Intellectual Property Group

20080232422 - Laser radiation source: A transmitter unit is described for an open path gas detector. The unit comprises: an enclosure having a window; and a coherent radiation transmitter, e.g. a tuneable laser diode transmitter, located within the enclosure and configured to direct a beam of radiation through the window. The window is slanted with... Agent: Honeywell International Inc.

20080225903 - Unstable monoblock laser cavity with integrated beam expander: A monoblock laser cavity includes a plurality of discrete optical components disposed serially on a substrate and sharing a common optical axis. The optical components include a laser rod of gain material, a Q-switch, an OPO crystal, an output coupler, and a positive lens. The output coupler has a convex... Agent: Department Of The Army Cecom Legal Office, Fort Belvoir

20080225904 - Laser system: An apparatus/method may comprise a line narrowed pulsed lithography laser light source which may comprise: a seed pulse providing laser system which may comprise: a first pulsed seed laser producing seed pulses at a rate of X kHz; a second pulsed seed laser producing seed pulses at a rate of... Agent: William C. Cray Cymer, Inc.

20080225905 - Apparatus, method and program for image forming: An image forming apparatus includes a scanning unit that deflects and scans a laser beam emitted from a laser beam source, an optical system that guides the laser beam onto a photoconductive drum, a storing unit that stores plural correction patterns that give a series of correction values for correcting... Agent: Amin, Turocy & Calvin, LLP

20080225906 - Laser scanning microscope and method of use: An improved laser scanning microscope and method of use are disclosed that enable polarization anisotropy measurements to be made with greater sensitivity and accuracy. A controllable optical element is provided in a light path between a laser source and a sample, and is controlled so that the sample is alternately... Agent: Arnold International

20080225907 - Auto-stabilization of lasers by means of resonant structures: Apparatus, systems, and methods are provided that utilize a material inserted into a laser cavity such the material has an optical length that varies as the laser cavity varies to keep the repetition rate constant. The material may provide auto-stabilization of the optical output form the laser cavity.... Agent: Schwegman, Lundberg & Woessner, P.A.

20080225908 - Laser system: An apparatus/method which may comprise a line narrowed pulsed excimer or molecular fluorine gas discharge laser system which may comprise a seed laser oscillator producing an output comprising a seed laser output light beam of pulses which may comprise a first gas discharge excimer or molecular fluorine laser chamber; a... Agent: William C. Cray Cymer, Inc.

20080225909 - Laser light source device, optical information recording device, and optical information reproducing device: For the purpose of solving the above-mentioned problem, the present invention is to adopt the variable wavelength type laser light source device composed of a semiconductor laser and a diffraction grating, wherein a polarization direction converter and a polarized beam splitter are placed in the optical path between the above... Agent: Antonelli, Terry, Stout & Kraus, LLP

20080225910 - Laser driver bias current calibration: A method for a calibration module to calibrate laser bias current in an optical transceiver. The method comprises causing the calibration module to configure a control module of the optical transceiver for a calibration operation, causing the calibration module to determine a laser bias current monitored by the control module,... Agent: Workman Nydegger

20080225911 - Wavelength detector, wavelength stabilization laser device, and image display device: A wavelength detector capable of distinguishing between the changes of a transverse mode and of a longitudinal mode of a laser light and thus detecting the change of the wavelength of the laser light with high accuracy is provided. In a wavelength detector 13: a diffraction grating 16 diffracts a... Agent: Wenderoth, Lind & Ponack L.L.P.

20080225912 - Solar light pumped laser and cooling method of solar light pumped laser: A solar light pumped laser performing laser oscillation by pumping a laser medium with solar light, the solar light pumped laser including, a laser medium 12, a container device 14 that supports the laser medium 12 therein, the container device 14 being provided with a focusing optical element 22 for... Agent: Greenblum & Bernstein, P.L.C

20080225913 - Semiconductor laser device: A semiconductor laser device has at least one semiconductor laser element, a heat sink having a first bearing area, on which the at least one semiconductor laser element bears, a housing upper part and a housing lower part, which, in the interconnected state, can at least partly surround the semiconductor... Agent: Lerner Greenberg Stemer LLP

20080225916 - Excessive current input suppressing semiconductor laser light emitting circuit: A semiconductor laser light emitting circuit includes a semiconductor laser diode emitting a laser light by modulating a current supplied thereto, a light intensity detection circuit that detects the laser light and generates a voltage, and a voltage-current conversion circuit converting a voltage into a current supplied to the laser... Agent: Dickstein Shapiro LLP

20080225915 - Method and apparatus for prevention of laser saturation: A method and apparatus for preventing laser current saturation (18) in high-speed optical drives. Saturation in laser current in high-speed optical drives is prevented before limitations in laser power are observed allowing the system to maintain requests for increases in the laser power. The saturation in laser current problem that... Agent: Philips Intellectual Property & Standards

20080225914 - System of method for dynamic range extension: The present invention generally relates to the operation of optical network equipment such as optical amplifiers. In one aspect, a method of operating an optical amplifier is provided such that output of the optical amplifier avoids the effects of operating an optical gain medium in a non-linear (kink) region of... Agent: Patterson & Sheridan, LLP

20080225917 - Laser processing apparatus and solid laser resonator: To provide a laser processing apparatus compatible with increase in the output of the pumping light source without increasing the reflectance of the output mirror. A solid laser medium for generating laser oscillation when pumping light from an pumping light source enters through two end surfaces, a splitting part for... Agent: Kilyk & Bowersox, P.l.l.c.

20080225918 - Index guided semiconductor laser with loss-coupled gratings and continuous waveguide: A system and a method of manufacture for a semiconductor laser with a continuous waveguide ridge extending the length of the laser. The continuous waveguide ridge is positioned through the center of the optical components of the semiconductor laser. The optical components including the waveguide ridge may be distributed Bragg... Agent: Slater & Matsil, L.L.P.

20080225919 - Power semiconductor laser with low divergence and low astigmatism, and method for the production thereof: The present invention relates to a high-power semiconductor laser having low divergence and low astigmatism, this laser being including, in an active layer, a first part in the form of a narrow monomode stripe with transverse index guiding terminating in a second part flaring out from the first part, also... Agent: Lowe Hauptman & Berner, LLP

20080225920 - Semiconductor laser diode apparatus and method of fabricating the same: A semiconductor laser diode apparatus capable of suppressing variation in an emission position and an emission direction of a laser beam emitted from a semiconductor laser diode element is obtained. This semiconductor laser diode apparatus includes a semiconductor laser diode element having warping along either a first direction in which... Agent: Ditthavong Mori & Steiner, P.C.

20080225921 - Projection exposure system, beam delivery system and method of generating a beam of light: s

20080225922 - Rod-type solid-state laser system: In a symmetrically stable optical resonator, a first reference plane is set at an arbitrary position between the end face (102), opposing a partial reflector (2), and the neutral point (101) of a rod type solid state laser medium (1), and an aperture (5) having a diameter substantially equal to... Agent: Sughrue Mion, PLLC

20080225923 - Unstable monoblock laser cavity: A monoblock laser cavity includes a plurality of discrete optical components disposed serially on a substrate and sharing a common optical axis. The optical components include a laser rod of gain material, a Q-switch, an OPO crystal, and an output coupler. The output coupler has at least one convex end... Agent: Department Of The Army Cecom Legal Office, Fort Belvoir

20080219297 - Linear x-ray laser generator: A small X-ray laser generator including a device (1) for generating and accelerating an electron beam, a plurality of targets (2) placed on the transport trajectory of a generated electron beam (4), and X-ray mirrors (3) for monochromatizing X-rays (5) generated by making the electron beam (4) collide against the... Agent: Posz Law Group, Plc

20080219298 - Fiber laser system using fiber having dysprosium: Provided is a fiber laser system including fiber containing dysprosium. The fiber laser system uses 1.7-μμm pump light. A resonator of the fiber laser system includes a dichroic mirror, a partial reflection mirror, and/or an FBG. Therefore, the fiber laser system can provide 3-μm laser light and have high light... Agent: Cantor Colburn, LLP

20080219300 - High power fiber laser: Fiber laser (130), for producing a single mode (SM) polarized single frequency (SF) high power laser beam of light, the fiber laser including an SF laser oscillator (132), a fiber laser pre amplifier (134, 150) and a high power fiber laser power amplifier (136, 200, 300), the fiber laser pre... Agent: Cooley Godward Kronish LLP Attn: Patent Group

20080219299 - Optical fibre laser: A fibre laser is disclosed comprising a single mode or low-order-mode cladding pumped fibre laser oscillator or preamplifier, a cladding pumped fibre laser power amplifier to guide multiple transverse modes, wherein an output from the oscillator or preamplifier is applied through a mode mixing means to the power amplifier. The... Agent: Gauthier & Connors, LLP

20080219301 - Sweep speed compensation: A method of manipulating a laser source, includes analyzing an optical signal generated by the laser source, evaluating on the basis of the analysis an actual indicator corresponding with an actual value of a tuning velocity of the laser source, comparing the actual indicator with a desired indicator corresponding with... Agent: Agilent Technologies Inc.

20080219302 - Harmonic generator and an image display device using the harmonic generator: It is aimed to suppress a local increase of an energy density per unit time in a nonlinear crystal. A fundamental wave emitted from a fundamental wave laser light source is condensed by a condenser lens and incident on a nonlinear crystal 11 having a poled structure. By displacing a... Agent: Wenderoth, Lind & Ponack L.l.p.

20080219303 - Color mixing light source and color control data system: Apparatus including a color mixing light source having a first laser configured to lase at one or a plurality of light emission wavelengths of 459 nanometers or less and a second laser configured to lase at one or a plurality of light emission wavelengths of 470 nanometers or more; and... Agent: Jay M. Brown

20080219304 - Analog external cavity laser: The present invention relates to the analog external cavity lasers (ECLs) including designs, materials, methods of manufacturing and methods of use for such ECLs and packages for such ECLs. Numerous criteria are presented that lead to improved cost/performance for ECLs and for systems incorporating such ECLs.... Agent: Emcore Corporation

20080219305 - Method and installation for laser cutting/welding: A laser cutting/welding installation including a laser head configured to deliver a laser beam designed to generate a solder bath, the installation also including a cooling device for the laser head. The cooling device includes at least one vortex tube, supplied with compressed gas, the tube including at least one... Agent: Oblon, Spivak, Mcclelland Maier & Neustadt, P.c.

20080219306 - Laser power algorithm for low power applications: A system and method to minimize the power consumed by a light source. The power of a light source in controlled in response to a determination of the quality of the received data in order to optimize a reduction in power consumption. If the quality of the received data is... Agent: Philips Intellectual Property & Standards

20080219309 - Method of fabricating semiconductor laser diode apparatus and semiconductor laser diode apparatus: A semiconductor laser diode apparatus capable of suppressing difficulty in handling of the semiconductor laser diode also when the width of a semiconductor laser diode portion is small is obtained. This method of fabricating a semiconductor laser diode apparatus includes steps of forming a plurality of first semiconductor laser diode... Agent: Ditthavong Mori & Steiner, P.c.

20080219308 - Quantum cascade laser: A quantum cascade laser is composed of a semiconductor substrate, and an active layer provided on the semiconductor substrate and having a cascade structure formed by multistage-laminating unit laminate structures 16 each of which includes a quantum well light emitting layer 17 and an injection layer 18. The unit laminate... Agent: Drinker Biddle & Reath (dc)

20080219307 - Single-mode photonic-crystal vcsels: This specification discloses a VCSEL (Vertical-Cavity Surface-Emitting Laser) device with single-mode output and optionally single polarization output. This device is given by lateral mode confinement by the PBG (Photonic Band-Gap) effect by shallow etching in a partial VCSEL top mirror. The PBG area encircles a MS-region (Mode-Shaping region), which is... Agent: Foley And Lardner LLP Suite 500

20080219310 - Injector emitter: Injection emitters (light-emitting diodes, superluminescent emitters) are used in the form of highly-efficient solid state radiation sources within a large wavelength range and for wide field of application, including general illumination using white light emitters provided with light-emitting diodes. Said invention also relates to superpower highly-efficient and reliable injection surface-emitting... Agent: Sughrue Mion, Pllc

20080219311 - Optical structures including selectively positioned color centers, photonic chips including same, and methods of fabricating optical structures: Various aspects of the present invention are directed to optical structures including selectively positioned color centers, methods of fabricating such optical structures, and photonic chips that utilize such optical structures. In one aspect of the present invention, an optical structure includes an optical medium having a number of strain-localization regions.... Agent: Hewlett Packard Company

20080219312 - Quantum cascade laser device: In a quantum cascade laser device 1, a laminate structure 11 is formed into a stripe shape along a predetermined direction on a principal surface at one side of a substrate 10, and insulating layers 15 are formed on bilateral sides of the laminate structure 11, and an insulating layer... Agent: Drinker Biddle & Reath (dc)

20080219313 - Semiconductor laser device: A semiconductor laser device includes a cavity extending in a propagation direction of a laser beam (X-direction). A front facet is on one end of the cavity through which the laser beam is emitted. A rear facet is on the other end of the cavity. Further, an adhesive layer and... Agent: Leydig Voit & Mayer, Ltd

20080219314 - Semiconductor laser device: A semiconductor laser device includes a cavity extending in a propagation direction of a laser beam (X-direction). A front facet is on one end of the cavity through which the laser beam is emitted. A rear facet is on the other end of the cavity. An anodic oxide film is... Agent: Leydig Voit & Mayer, Ltd

20080219315 - Semiconductor optical device and manufacturing method thereof: A low reflective window structure in an existent electro-absorption optical modulator involves a trading off problem between the increase in the parasitic capacitance and the pile-up. This is because the capacitance density of the pn junction in the window structure is higher compared with the pin junction as the optical... Agent: Antonelli, Terry, Stout & Kraus, LLP

20080219316 - Laser and monitoring photodetector with polymer light guide: A surface emitting laser (100) and a monitoring photodetector (MPD) 158 are mounted in a TO (transistor outline package) can (150) on the same plane as one another. Light from a rear facet (108) of the laser is directed to the MPD through a polymer light guide (164).... Agent: Jones, Tullar & Cooper, P.c.

20080219317 - Gas-purged laser system and method thereof: A gas-purged laser system and method of gas-purging a laser system are disclosed. One embodiment of the laser system comprises an excimer refractive surgical laser system having a laser beam optical path configured to allow purging of a portion of a volume enclosing the laser beam optical path with a... Agent: Alcon

20080212620 - Microsphere fiber laser system: A microsphere fiber laser system includes a laser beam conducting fiber coated with doped microspheres. One end of the fiber is pumped with a pumping laser. The other end of the fiber is an output. Microspheres with different dopants may be used to obtain outputs of different wavelengths. The microspheres... Agent: Nasa Goddard Space Flight Center

20080212621 - Wavelength converter and two-dimensional image display device: A wavelength converter of the present invention is provided with a laser resonator including a fiber containing an laser-active material and a fiber grating formed in the fiber, a laser light source for emitting an excitation light to the fiber, and a wavelength conversion element for converting a fundamental wave... Agent: Wenderoth, Lind & Ponack L.L.P.

20080212622 - Variable wavelength light source: A gain element and a variable wavelength reflector form a resonator. A wavelength selective element selects a resonance wavelength in the resonator. A beam splitter is provided for monitoring an incident light from the gain element and a reflected light from the variable wavelength reflector. A phase adjustment element is... Agent: Oblon, Spivak, Mcclelland Maier & Neustadt, P.C.

20080212623 - Device and method for material processing by means of laser radiation: In a device for material processing by means of laser radiation, said device comprising a source of laser radiation emitting pulsed laser radiation for interaction with the material; optics focusing the pulsed processing laser radiation to a center of interaction in the material; a scanning unit shifting the positions of... Agent: Patterson, Thuente, Skaar & Christensen, P.A.

20080212624 - Dual pulse-width medical laser: A laser device that includes a dual pulse-width laser-pumping circuit generates long and short laser pulses. The laser-pumping circuit employs a single power supply with dual high voltage outputs that are selectable under control of a user. The laser device conveniently generates long and short laser pulses or a mix... Agent: Stout, Uxa, Buyan & Mullins LLP

20080212625 - Semiconductor device: Disclosed is a semiconductor apparatus comprising an N-type material which cools a silicon semiconductor using the current flowing through the silicon semiconductor.... Agent: Sughrue Mion, PLLC

20080212626 - Semiconductor laser with reduced heat loss: Disclosed is a semiconductor laser. The semiconductor laser includes a semiconductor chip that includes an active layer and emits radiation in a main radiating direction. The active layer is structured in a direction perpendicular to the main radiating direction to reduce heating of the semiconductor chip by spontaneously emitted radiation,... Agent: Cohen, Pontani, Lieberman & Pavane LLP

20080212628 - Auto-power control circuit to maintain extinction ratio of optical output from laser diode: The present invention provides an auto-power control (APC) circuit and a method to stabilize the extinction ratio of an optical output from a laser diode (LD) in an optical transmitter. The APC circuit according to the invention includes two feedback loops for the modulation IM and the bias current IB... Agent: Smith, Gambrell & Russell

20080212627 - Laser control system, optical scanning device, and image forming apparatus: A control system for a laser source driven by a direct current drive voltage includes a system control board, a laser driver, and a power stabilizing circuit. The system control board is configured to output a control signal based on input data. The laser driver is coupled to the laser... Agent: Dickstein Shapiro LLP

20080212629 - Ultra-low heat laser: An ultra-low heat laser that does not rely on florescence cooling. Generally, the inventive laser includes a pump source operable at a pump frequency and a gain medium disposed to receive energy from the source and lase at a frequency close to the pump frequency. In the illustrative embodiment, the... Agent: Benman, Brown & Williams Suite 2740

20080212630 - Laser apparatus: A laser apparatus includes an excitation light generator for emitting excitation light and a wavelength converter including a solid laser medium for emitting laser light by converting a wavelength of the excitation light. The excitation light generator includes a surface-emitting laser having a first reflector with top and bottom reflectors... Agent: Posz Law Group, PLC

20080212632 - Integrated tapered diode laser arrangement and method for producing it: An integrated tapered diode laser arrangement comprises an injector region (2) and a region (3) which is optically coupled to the injector region and expands in a cross section. At least one of said regions (2, 3) has a quantum well structure with a plurality of semiconductor materials, wherein the... Agent: Thomas Langer

20080212631 - Red surface emitting laser element, image forming device, and image display apparatus: A red surface emitting laser element includes a first reflector, a second reflector including a p-type semiconductor multilayer film, an active layer between the first reflector and the second reflector, and a p-type semiconductor spacer layer between the active layer and the second reflector, the p-type semiconductor spacer layer having... Agent: Fitzpatrick Cella Harper & Scinto

20080212633 - Surface emitting laser device: An optical resonator including a lower multilayer reflector and an upper multilayer reflector is arranged on a substrate. A strained active layer having a multiple quantum well structure formed with a quantum well layer and a barrier layer is arranged in the resonator. A current confinement layer including a selectively... Agent: Oblon, Spivak, Mcclelland Maier & Neustadt, P.C.

20080212635 - High efficiency distributed feedback (dfb) laser with low-duty cycle grating: The invention provides a grating for a distributed feedback laser having decreased diffraction loss with reduced +/−1 order diffraction and scattering loss resulting from the reduced imperfections in the grating fabrication. In various embodiments, the grating has a low duty cycle wherein the ratio of the length of the low-index... Agent: Dorsey & Whitney LLP Intellectual Property Department

20080212634 - Optical irradiation device for the polarization of alkali atoms and a device for the hyperpolarization of noble gases: An optical irradiation device for the polarization of alkali metal atoms for the hyperpolarization of noble gases by spin exchange includes at least one semiconductor laser device which can generate laser light which, with regard to its wavelength, is suitable for the polarization of the alkali metal atoms. A polarizer... Agent: Lerner Greenberg Stemer LLP

20080212637 - Distributed feedback semiconductor laser including wavelength monitoring section: In general, a complex-coupled distributed feedback (DFB) semiconductor laser includes a grating formed by grooves through at least a part of an active region of a laser cavity. The complex-coupled DFB laser may be configured with a wavelength monitoring section and may be configured to provide facet power asymmetry. The... Agent: Applied Optoelectronics, Inc.

20080212636 - Surface-emission laser diode and fabrication process thereof: A surface-emission laser diode comprises a cavity region over a semiconductor substrate and includes an active layer containing at least one quantum well active layer producing a laser light and a barrier layer, a spacer layer is provided in the vicinity of the active layer and formed of at least... Agent: Cooper & Dunham, LLP

20080212638 - Laser: A laser device and a method of pumping a laser gain medium (R) comprise directing pulses of laser light from a pump laser (10) to a series of separate locations (11, 12, 13, 14, 15, 16 and 17) arranged longitudinally along the gain medium (R) in the direction of laser... Agent: Buchanan, Ingersoll & Rooney PC

20080212639 - Broadband laser lamp with reduced speckle: The present invention is directed to a laser resonator emitting visible radiation with reduced speckle noise, wherein said optical resonator is formed by at least two mirrors at both ends of a visible radiation emitting lasing material, wherein that optical resonator enhances multimode operation, so that said visible radiation emitting... Agent: Philips Intellectual Property & Standards