Coherent light generators inventions 01/06

20060018348 - Optical electronic device with partial reflector layer: An optical electronic device with a partial reflector layer is disclosed. The device includes a first reflector and a second reflector that define an optical cavity therebetween. The first and second reflectors are tuned to be selective of a visible wavelength at an intensity by optical interference. The second reflector...

20060018349 - Pulse train generator and method for generating a repeating sequence of laser pulses: A pulse train generator for generating laser pulses comprises a laser setup with a cavity, an electro-optic switch for switching the pulses in and out from the cavity. The electro-optic switch and a control element are designed and connected for switching out laser pulses with a first repetition rate thereby...

20060018350 - Laser burst boosting method and apparatus: Methods and apparatus for managing thermal loads on a laser gain medium and for boosting the output power of a diode pumped laser are disclosed. The short-term average pumping power to the gain medium is increased, to provide a burst of pumping energy to the laser gain medium. A subsequent...

20060018351 - Semiconductor laser device: In a semiconductor laser device, a wiring board (101) has pad patterns on its top surface, on which a block (102) is also mounted. The block (102) has a first mounting surface (113) and a second mounting surface (114), both of which face in an identical direction. The block (102)...

20060018353 - Nitride-based semiconductor light-emitting device and method of fabricating the same: A nitride-based semiconductor light-emitting device capable of stabilizing transverse light confinement is obtained. This nitride-based semiconductor light-emitting device comprises an emission layer, a cladding layer, formed on the emission layer, including a first nitride-based semiconductor layer and having a current path portion and a current blocking layer, formed to cover...

20060018352 - Ridge-type semiconductor laser and method of fabricating the same: A ridge-type semiconductor laser is provided. The ridge-type semiconductor laser includes a pattern for a current inflow path control formed on an active layer and having an opening thereinside controlling a current inflow path with a width W1, and a ridge formed on the pattern for a current inflow path...

20060018354 - Optically pumped surface emitting semiconductor laser device: A surface emitting semiconductor laser device, having at least one monolithically integrated pump radiation source (20), in which the pump radiation source (20) has at least one edge emitting semiconductor structure (9) that is suitable for emission of electromagnetic radiation whose intensity profile transversely with respect to the emission direction...

20060018356 - Diode laser arrangement and associated beam shaping unit: A diode laser apparatus includes a plurality of laser bars, each laser bar having an emission direction and a beam path. The laser bars are disposed along an arc, the emission directions of the laser bars are directed toward an inside of the arc, and a slow-axis direction of each...

20060018355 - Laser diode arrays with reduced heat induced strain and stress: A laser diode array has a semiconductor layered structure that includes at least one active layer. A heat sink is coupled to semiconductor layered structure. A plurality of laser emitters are formed in the active layer. A majority of the plurality of laser emitters have a spacing between adjacent laser...

20060018357 - Waveguide laser: A laser waveguide, where the laser waveguide can be formed by electrodes and at least one sidewall in a manner allowing a more compact structure than previously provided. Protrusions in the electrodes allow easier laser starts, and sectional sidewall(s) allow easier fabrication of sidewall(s), decreasing manufacturing costs....

20060018358 - Semiconductor laser device: A semiconductor laser device includes: an electrically insulating film, on the top face of a laser chip; and a metal film, on the electrically insulating film. The electrically insulating film and/or the metal film has, in plan, a polygonal shave with five or more apexes, each of the apexes having...

20060018359 - Structure for optical axis adjustment of laser diode and optical pickup apparatus: A structure for optical axis adjustment of a laser diode is provided which makes it possible to easily perform optical axis adjustment and inclination adjustment of the optical axis and makes it possible to shorten the operation time necessary for the assembly of the apparatus. The structure for optical axis...

20060013269 - Method for generating high-speed particle and system for generating high-speed particle: The present invention relates to a high-speed particle generating method and so on for generating high-speed particles from a high-speed particle generating target by condensing a pulsed laser beam to a micro-spot on the surface of a high-speed particle generating target. The high-speed particle generating method is a method that...

20060013270 - Laser light source: The invention provides a compact laser light source whose wavelength can be designed freely in a wavelength band in which the semiconductor laser has not been put to practical use by combining an efficient nonlinear optical crystal and high-power semiconductor lasers for optical communication. In one embodiment, the laser light...

20060013271 - Variable attenuator: Linearly polarised laser pulses are variable attenuated by rotating a plate (20) with respect to the optical axis (10). A second plate (21) may be arranged in a symmetrical manner to compensate for offset of the pulse from the optical axis (10). A feedback system may be used to control...

20060013272 - Laser system with optical parametric amplifier: In a laser system with optical parametric amplifier (8), a laser source (1) for generating seed pulses, and a regenerative amplifier (2) for generating pump pulses, the seed pulses of laser source (1) are coupled, both into the regenerative amplifier (2) and into the optical parametric amplifier (8). Moreover, the...

20060013273 - Monolithic wavelength stabilized asymmetric laser: A monolithic wavelength stabilized system comprises a laser monolithically formed with a waveguide splitter having at least two branches. Non-identical resonators having different wavelengths are operatively coupled to each branch of the splitter and a photodiode is communicatively coupled to receive the output from each non-identical resonator. A control unit...

20060013274 - Laser unit: A laser unit using circulating cooling water, which may economically maintain the cleanliness of the cooling water and a channel for the cooling water. By a command of an operator, the activation of a water conveying device of the laser unit, the start of the laser oscillation, the stop of...

20060013275 - Semiconductor laser device: A semiconductor laser device 1 has, arranged inside an airtight-sealed package 2, a semiconductor laser element 3 having an active region made of one material selected from the group consisting of an AlGaAs-based crystal, an AlGaInP-based crystal, an AlGaN-based crystal, and an InGaN-based crystal. The atmospheric gas inside the package...

20060013276 - Vcsel having an air gap and protective coating: A VCSEL includes a gap in a mirror stack and a protective layer sealing an end of the gap. The gap defines a boundary of the aperture of the VCSEL without introducing the stresses that oxide regions in oxide VCSELs can cause, and the protective layer, which can be a...

20060013277 - Diffractive optical element and laser machining apparatus using same: A conventional diffractive optical element (DOE), which consists of repetition of a unit pattern Υ, has an advantage of applicability of the Fast Fourier Transform algorithm to calculate diffraction beam spots intensities on lattice points on an image plane. But, the conventional DOE has a drawback of impossibility of diffracting...

20060013278 - Laser level: A laser level disposable on a reference surface includes a housing, a pendulum pivotably connected to the housing, a first laser diode disposed on the pendulum for emitting a first laser beam along a first path, and a lens disposed on the pendulum in the first path for converting the...

20060007964 - Laser beam generating device: A laser beam generating device has an underframe and a laser main body. The underframe has a guide mechanism. The laser main body generates a laser beam or plane, and has a turning mechanism that rotates inside the guide channel, and travels along the guide mechanism, in a manner such...

20060007965 - Passive q-switch modulated fiber laser: An all-fiber erbium laser oscillating in a passive Q switched mode. The laser includes a crystal saturable absorber that may be Co2+:ZnSe or Cr2+:ZnSe. In preferred embodiments continuous pumping or short pulse pumping may be utilized. The laser is characterized by low threshold high-power, short-pulse generation. In preferred embodiments the...

20060007966 - Electro-optical modulator module for co2 laser q-switching, mode-locking, and cavity dumping: Various electro-optical modulator module designs are presented, which can provide for uniform, symmetric, and efficient heat removal for mode-locking, Q-switching, and/or cavity dumping operations. Heat can be uniformly extracted from an EO crystal without imposing undue stress, thereby preventing birefringence and laser beam degradation. A liquid-cooling approach can be used...

20060007967 - Method for selecting laser output wavelength: The device of the present invention includes a laser source which produces a laser output, an optical parametric oscillator optically connected in series to a laser source wherein the optical parametric oscillator has a predetermined polarization that can be changed and the polarization of the optical parametric oscillator can be...

20060007968 - Long pulse laser: An optically-pumped solid-state laser is disclosed and includes a vanadate-based laser crystal and is configured to produce long Q-switched pulses at high repetition rate with high stability....

20060007969 - Short pulse optical interconnect: A pulse laser generates a pulse train. A modulator receives the pulse train and a data signal. The modulator encodes the data signal onto the pulse train by selectively passing pulses....

20060007970 - 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...

20060007971 - Laser driving method and laser driving device: Disclosed herein is a laser driving method including the step of adjusting an initial value of driving current for driving a laser when an operation mode is changed on a basis of a difference in magnitude between a first bias current including information on threshold current of the laser in...

20060007972 - Method and device for passive alignment: The present invention is related to a method and device for precision and passive alignment such as precision and passive alignment technology for low cost array fibre access components. A laser carrier is passive aligned to an MT-interface using alignment structures on a replicated carrier. The laser carrier is based...

20060007973 - Broadband cascade light emitters: A broadband CLE capable of operation simultaneously at multiple wavelengths comprises: a core region including a multiplicity or cascade of stages, each stage including a radiative transition region. A first group of stages emits radiation at a first wavelength and at a first aggregate intensity per group, and a second...

20060007974 - Method for increasing maximum modulation speed of a light emitting device, and light emitting device with increased maximum modulation speed and quantum well structure thereof: The method comprises forming barrier layers of AlxGa1-xAs, forming a quantum well layer of InGaAs between the barrier layers, and forming an interfacial layer between the quantum well layer and each of the barrier layers....

20060007975 - Laser diode and optical apparatus using it: A laser diode capable of inhibiting overflow of electrons in a p-type cladding layer and improving temperature characteristics and light emitting efficiency is provided. A laser diode at least comprises: an n-type cladding layer; an active layer; and a p-type cladding layer, which are made of an AlGaInP compound semiconductor...

20060007976 - Semiconductor laser device: In a semiconductor laser device of the invention, a ridge portion 150 forms a waveguide, and guided light goes along the ridge portion 150. A tail of the guided layer is present also at first side portions 151, while second side portions 152 are regions which the tail of the...

20060007977 - Semiconductor laser diode array: In a semiconductor laser diode array, first electrodes of a laser chip are coated with an insulating substance, and contact holes are formed in the insulating substance. The laser chip is assembled by being secured on a submount while facing downward, wherein electrodes and a solder pattern are provided in...

20060007978 - Bandwidth-limited and long pulse master oscillator power oscillator laser systems: Laser systems have a line-narrowed master oscillator and a power oscillator for amplifying the output of the master oscillator. The power oscillator includes optical arrangements for limiting the bandwidth of radiation that can be amplified. The limited amplification bandwidth of the power oscillator is relatively broad compared to that of...

20060007979 - Surface-emitting laser diode having reduced device resistance and capable of performing high output operation, surface-emitting laser diode array, electrophotographic system, surface-emitting laser diode module, optical telecommunication system, optical i: A surface-emitting laser diode device that oscillates in a direction perpendicular to the substrate is provided. This surface-emitting laser diode device includes: an active layer; a resonator structure including a first distributed Bragg reflector and a second distributed Bragg reflector that face each other and sandwich the active layer; a...

20060007980 - Cavity with dispersive element: A laser being tunable in wavelength a first reflecting unit and a second unit, both reflecting units being arranged to at least partially reflect an incident beam of electromagnetic radiation towards each other, an optical path of said beam of electromagnetic radiation within said cavity, which is defined in length...

20060007981 - High precision optical imaging systems and related systems: This disclosure describes the design and construction of high-precision off-axis optical imaging systems. The disclosure also describes the design and construction of high-precision mounting structures for rigidly holding optical elements in an optical imaging system. The disclosure further describes both a mechanism for highly stable mounting and a technique for...

20060002432 - Fiber-coupled microsphere raman laser: The present invention is a Raman laser and methods related thereto. In the preferred embodiments, the Raman laser comprises a laser pump signal in a fiber waveguide which is optically coupled to a micro-resonator through a fiber taper. The micro-resonator is constructed from a material that has a high Q...

20060002435 - Cladding structure of optical fiber laser: The present invention relates to a cladding structure of an optical fiber laser capable of allowing efficient optical pumping at a core of the optical fiber laser using the concept of quantum chaos, and more particularly, to a cladding structure of an optical fiber laser, which enables efficient pumping in...

20060002434 - Fiber laser oscillators: A fiber laser oscillator (1; 100) has an optical fiber (10), a pumping light emitting device (30), a light guide member (40; 140), and a core member (50). The core member (50) is configured to have a flat plate-shaped, cylindrical, annular, or hollow spherical configuration. The optical fiber (10) is...

20060002433 - Micro crystal fiber lasers and method of making frequency-doubling crystal fibers: A method of fabricating micro crystal fiber lasers and frequency-doubling crystal fibers is disclosed. The micro crystal fiber laser contains gain crystal fibers, frequency-doubling crystal fibers, and a semiconductor laser. The semiconductor laser provides a laser beam. The gain crystal fibers receive the laser beam and generate a base-frequency beam....

20060002436 - Wavelength tunable laser and method of controlling the same: A wavelength tunable laser is constituted by including a resonator composed of a pair of reflectors arranged to face each other, and inside the resonator, a SOA radiating a laser beam with a gain for a wide range of wavelengths, a transmission-type wavelength tunable filter having an asymmetric filter characteristic,...

20060002437 - Method and optical arrangement for the generation of a broadband spectrum: The invention is directed to a method and an optical arrangement for the generation of a broadband spectrum in which wavelength regions are selected in an application-oriented manner already during spectrum generation in order to provide increased laser power. A passively mode-coupled solid-state laser provides picosecond laser pulses with an...

20060002438 - System and method for wavelength error measurement: A system for detecting wavelength error that includes one or more ordered pairs of photodetectors each of which receives an individual optical signal and is used to detect a wavelength error in that optical signal. Each individual optical signal is directed towards a corresponding pair of photodetectors. The pair of...

20060002439 - Laser output control apparatus and method: A laser output control apparatus and method are provided. The laser output control apparatus includes a laser unit including a laser diode and a photo diode having at least one connection structure therebetween; a power controller maintaining power of a laser beam emitted by the laser diode constant in accordance...

20060002440 - Optical element and its manufacturing method: To improve the reliability of an optical element and its manufacturing method. An optical element includes a substrate, a columnar section formed above the substrate and having an upper surface for light emission or incidence, a resin layer including a first section formed above the substrate and around the columnar...

20060002441 - Semiconductor laser with side mode suppression: Systems and methods for stripping an optical mode from a semiconductor laser. A waveguide layer is included in the semiconductor laser and is typically arranged beneath the active region. The waveguide layer is configured to match the phase of the second order mode. The waveguide layer does not substantially match...

20060002442 - Light emitting devices having current blocking structures and methods of fabricating light emitting devices having current blocking structures: Light emitting devices and methods of fabricating light emitting devices having a current blocking mechanism below the wire bond pad are provided. The current blocking mechanism may be a reduced conduction region in an active region of the device. The current blocking mechanism could be a damage region of a...

20060002444 - Long wavelength vertical cavity surface emitting lasers: A vertical cavity surface emitting laser (VCSEL) includes independently definable current and optical confinement structures that provide unique forms of drive current and transverse mode confinement, respectively. The optical guide may be formed from an upper distributed Bragg reflector (DBR), as an etched mesa structure and/or as an intracavity optical...

20060002443 - Multimode external cavity semiconductor lasers: External cavity laser devices provide multimode laser operation by using a wavelength selective element that produces a spectral width profile able to support multiple longitudinal laser modes. The spectral width profile, for example, may have a substantially flat response across multiple longitudinal laser modes, such that no single mode predominates....

20060002445 - Microdisk laser with unidirectional generation property: The present invention relates to a microdisk laser with a unidirectional generation property, and more particularly, to a microdisk laser designed in the form of a triangle, wherein the incident angles of portions of a laser beam at two upper sides of the triangle are greater than a critical angle...