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8976821 Anisotropic beam pumping of a Kerr lens modelocked laser  
Apparatus and methods for anisotropic pumping of a Kerr lens modelocked laser. Direct diode laser pumping of an ultrafast Kerr lens modelocked laser oscillator is accomplished. Diode lasers...
8976828 Driving circuit of a laser diode and driving method of a laser diode  
A driving method of a laser diode includes setting a bias current, a modulation current, a first target corresponding to a predetermined average power, and a second target corresponding to a...
8976829 Edge-emitting semiconductor laser  
An edge-emitting semiconductor laser is specified. A semiconductor body includes an active zone suitable for producing electromagnetic radiation. At least two facets on the active zone form a...
8971367 Surface-emitting laser, surface-emitting laser array, method of manufacturing surface-emitting laser, method of manufacturing surface-emitting laser array and optical apparatus equipped with surface-emitting laser array  
A method of manufacturing a surface-emitting laser that allows precise alignment of the center position of a surface relief structure and that of a current confinement structure and formation of...
8971364 Driving circuit for analog-modulated diode-laser  
A diode-laser is driven by a modulated voltage through a voltage-to-current converter. The modulated voltage has a fixed level determined by an applied fixed bias voltage and a variable level...
8971362 Monitoring of a laser source with front and rear output photodetectors to determine frontal laser power and power changes over laser lifetime  
A power monitoring and correction to a desired power level of a laser or group of lasers utilizes two photodetectors which are employed to accurately determine the amount of output power from the...
8971374 Device for generating electromagnetic radiation  
A device for generating electromagnetic radiation includes a light source (1) generating a first radiation (7) at a fundamental wavelength, an optical resonator (2) in which the first radiation...
8971375 Polarization-stable surface-emitting laser diode  
The present invention relates to a surface-emitting laser diode with an active amplifying region (2) which is bounded by two laser mirrors (1, 3), while one or more polarization-selective layers...
8971371 Laser device with coupled laser source and waveguide  
Laser device comprising: a laser source including a light emitting structure;a guide structure to deliver light generated by the emitting structure, this guide structure comprising at least a...
8971366 Killswitch arrangement for and method of regulating laser output power in electro-optical readers  
Output power of a laser beam emitted by a laser in an electro-optical reader is regulated by storing a killswitch byte in non-volatile memory, and by checking whether the killswitch byte is in a...
8970944 Ultrabright long biphoton generation with non-linear optical material  
Improved production of entangled photon pairs (biphotons) via spontaneous parametric down conversion (SPDC) is provided. In one aspect, forward-wave SPDC is performed in a monolithic resonator...
8971370 Laser devices using a semipolar plane  
An optical device includes a gallium and nitrogen containing substrate comprising a surface region configured in a (20-2-1) orientation, a (30-3-1) orientation, or a (30-31) orientation, within...
8970948 Method and system for operating semiconductor optical amplifiers  
Disclosed are systems and methods for using a semiconductor optical amplifier (SOA) as an optical modulator for pulsed signals. In accordance with the principles of the invention, the SOA can be...
8971369 Quantum cascade laser structure  
A quantum cascade laser structure having a plurality of cascades each of which comprises a number of alternately arranged quantum wells and barriers of different thicknesses and heights, wherein...
8971365 Symmetrical, direct coupled laser drivers  
Symmetrical, direct coupled laser drivers for high frequency applications. The laser drivers are in integrated circuit form and use a minimum of relatively small (low valued) external components...
8971358 Broadband generation of mid IR, coherent continua with optical fibers  
Coherent and compact supercontinuum light sources for the mid IR spectral regime are disclosed and exemplary applications thereof. The supercontinuum generation is based on the use of highly...
8971376 Broad area laser pump combiner  
Multiple broad area lasers are coupled to a planar lightwave circuit, where the waveguides come together to form a single wide emitting aperture. A tapered lens is used at the output of the planar...
8971373 Nanolaser for generating coherent electromagnetic radiation  
Nanolaser for generating coherent electromagnetic radiation, comprising at least one nanoparticle of metal, preferably silver, or semiconductor, at least one exciting element, preferably a quantum...
8971360 Light source, and optical coherence tomography module  
An optical module includes a light source. The light source can be a swept wavelength light source, and optical module includes a wavemeter. The wavemeter includes a wavemeter tap capable of...
8971372 Surface emitting laser device and atomic oscillator  
A surface emitting laser device includes a substrate, a lower reflector, an active layer, an upper reflector, and surface emitting lasers configured to emit light. A second phase adjustment layer,...
8969113 Optical device structure using GaN substrates and growth structures for laser applications  
Optical devices having a structured active region configured for selected wavelengths of light emissions are disclosed.
8971368 Laser devices having a gallium and nitrogen containing semipolar surface orientation  
Laser devices formed on a semipolar surface region of a gallium and nitrogen containing material are disclosed. The laser devices have a laser stripe configured to emit a laser beam having a...
8969752 Laser processing method  
The present invention provides a laser processing method comprising the steps of attaching a protective tape 25 to a front face 3 of a wafer 1a, irradiating a substrate 15 with laser light L while...
8971363 Method and device for shielding a high-power laser apparatus and high-power-laser optical system employing such a device  
Method for shielding a high-power laser apparatus (S) in which a laser beam is generated and then amplified in at least a first amplification stage, including spatial filtering (4) of the...
8971361 Optical arrangement and method  
Processing of incoherent electromagnetic radiation is described, said incoming incoherent electromagnetic radiation comprising radiation in a first wavelength interval. An arrangement comprises a...
8970935 High energy fiber laser modulator  
A laser device includes a seed laser, a polarizer, a pseudorandom bit sequence (PRBS) pattern generator, and a phase modulator. The polarizer may be optically coupled to receive an output of the...
8971359 Temperature control of a fiber laser system  
Techniques and architecture are disclosed for controlling the temperature of a fiber laser system. In some embodiments, a single thermoelectric cooler (TEC) may be utilized to control the...
8965153 Optical semiconductor device and optical waveguide  
A core of an optical waveguide and a core of a waveguide type optical device are adjacently disposed, and a layer is continuously formed at one end of the core of the waveguide type optical...
8964807 Magnesium based gettering regions for gallium and nitrogen containing laser diode devices  
In an example, the present invention provides a gallium and nitrogen containing laser diode device. The device has a gallium and nitrogen containing substrate material comprising a surface region,...
8964798 Reducing the spectral bandwidth of lasers  
A laser system for semiconductor inspection includes a fiber-based fundamental light source for generating fundamental light that is then converted/mixed by a frequency conversion module to...
8964801 Method and system for stable and tunable high power pulsed laser system  
A laser system includes an injection laser source having an output and operable to provide a laser output characterized by a first wavelength, a first linewidth, an output power. The laser system...
8964805 Thermally optimized mechanical interface for hybrid integrated wavelength division multiplexed arrayed transmitter  
An apparatus comprising a plurality of laser dice and a heat sink positioned between the laser dice and thermally coupled to the laser dice. Also included is an apparatus comprising a chip...
8964808 Laser light source and method for producing a laser light source  
A laser light source comprises, in particular, a semiconductor layer sequence (10) having an active region (45) and a radiation coupling-out area (12) having a first partial region (121) and a...
8964796 Structure for electron-beam pumped edge-emitting device and methods for producing same  
A semiconductor light emitting device includes a light guiding structure, a light emitting layer disposed within the light guiding structure, and a structure for discharging excess electric charge...
8964806 System and method for generating an optimum side-mode suppression ratio continuous tuning path for a semiconductor tunable laser  
A system and method to determine data sets of front mirror current, back mirror current and phase current that change the wavelength output by a semiconductor laser in a prescribed trajectory...
8964799 Q-switching-induced gain-switched erbium pulse laser system  
The present invention relates to a Q-switching-induced gain-switched erbium pulse laser system, capable of generating erbium laser pulses within the 2.5 μm to 3.0 μm wavelength region, by means of...
8964804 Variable bandgap modulator for a modulated laser system  
A modulated laser system generally includes a light emission region, a modulation region having a plurality of semiconductive layers, at least one of which includes a quantum well layer having a...
8960927 Coherent light source apparatus and projector  
A coherent light source apparatus includes a coherent light source, a first optical system, a light deflection unit, a second optical system and a light mixing unit disposed in that order. The...
8959955 Pulse laser device, transparent member welding method and transparent member welding apparatus  
An inexpensive pulse laser device that outputs a laser pulse capable of welding a transparent member is provided. There is provided a pulse laser device including: a laser light source 1 that...
8964800 Microcrystal laser for generating laser pulses  
A microcrystal laser for generating laser pulses has a laser resonator which has a laser medium arranged between two mirrors; and an arrangement for stabilizing the optical path length is...
8964802 Traveling-wave ring-oscillators without a faraday rotator  
A ring laser-resonator generating plane-polarized fundamental-frequency radiation includes an optically nonlinear crystal configured for type-II second-harmonic generation of fundamental-frequency...
8964809 Semiconductor optical integrated device  
A semiconductor optical integrated device includes a substrate having a main surface with a first and second regions arranged along a waveguiding direction; a gain region including a first...
8964803 Wavelength sweeping light source and imaging apparatus using the same  
A light source apparatus includes a laser oscillator equipped with a first optical resonator, a plurality of second optical resonators including input portions respectively connected in parallel...
8965556 Robot system  
This robot system includes a robot, a laser emitting portion moved by the robot, capable of scanning a welding locus with a laser beam at least in a state where the laser emitting portion is not...
8958447 System and method for lasers in surgical applications  
Disclosed is a surgical laser system. The system includes a laser generator to generate laser radiation to cause water absorption levels that approximate water absorption levels achieved with a...
8958448 Thermal management in laser diode device  
Embodiments are disclosed that relate to reducing inductive losses and controlling driver and laser diode temperatures in an optical assembly comprising a laser diode. For example, one disclosed...
8958446 Method for determining stabilization of light output signal and laser frequency stabilizing device  
A method for determining stabilization of a light output signal employed by a laser frequency stabilizing device which irradiates laser light on an absorption cell to obtain the light output...
8958451 Semiconductor laser and optical semiconductor device  
In the semiconductor laser including a diffraction grating in which a first diffraction grating region with a first pitch, a second diffraction grating region with a second pitch and a third...
8958449 Surface-emitting laser device, surface-emitting laser array, optical scanning apparatus and image forming apparatus  
A surface-emitting laser device configured to emit laser light in a direction perpendicular to a substrate includes a p-side electrode surrounding an emitting area on an emitting surface to emit...
8958445 DC-coupled laser drive circuit and method for driving laser diode device  
A DC-coupled laser drive circuit (1) includes (i) a voltage drop section (14) provided between a power source and a pre-driver (12) and (ii) a voltage drop amount controlling section (16) for...