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| Number | Title | Issue Date |
| 7653096 | Laser light source device, exposure device, and mask inspection device using this laser light source device A laser light source device 1, comprising M number of laser light sources, of which frequency is shifted from a fundamental frequency by (m−1)·a·Δω, a first laser light source section 2 and a first fiber amplifier section 4 for amplifying ... | 01/26/2010 |
| 7627008 | Laser apparatus and method for harmonic beam generation A second harmonic laser beam is generated by passing a fundamental frequency laser beam through a single second harmonic generator (SHG) crystal more than two and preferably four times, to increase the amount of power converted from the fundamental beam into the sec... | 12/01/2009 |
| 7623558 | Optical systems for laser arrays Surface emitting laser arrays with intra-cavity harmonic generation are coupled to an optical system that extracts harmonic light in both directions from an intra-cavity nonlinear optical material in such a way that the focusing properties of the light beams are mat... | 11/24/2009 |
| 7623559 | Optical device, laser beam source, laser apparatus and method of producing optical device After forming domain inverted layers 3 in an LiTaO3 substrate 1, an optical waveguide is formed. By performing low-temperature annealing for the optical wavelength conversion element thus formed, a stable proton exchange layer 8 is fo... | 11/24/2009 |
| 7623557 | Wavelength converting optical system, laser light source, exposure apparatus, mask examining apparatus, and macromolecular crystal lens machining device A fifth harmonic wave is formed from a fundamental wave of p-polarized light via a second harmonic wave forming optical element 3, a third harmonic wave forming optical element 4, and a fifth harmonic wave forming optical element 6 and a second ... | 11/24/2009 |
| 7616670 | Laser light source apparatus and image generating apparatus using laser light source apparatus Disclosed is a laser light source apparatus including an excitation light source, a pair of resonator mirrors, and a resonator including the excitation light source and the pair of resonator mirrors. In the laser light source apparatus, one of two higher harmonic wa... | 11/10/2009 |
| 7613215 | High efficiency second harmonic generation vertical external cavity surface emitting laser A vertical external cavity surface emitting laser (VECSEL) in which the full-width at half maximum (FWHM) of laser light is reduced by two etalon filter layers to improve the efficiency of second harmonic (SHG) crystal is provided. The VECSEL includes: a laser chip ... | 11/03/2009 |
| 7599410 | Semiconductor-diode-pumped solid state laser device A solid state laser medium is composed of Nd:YAG, the wavelength of a second harmonic wave is 557 to 559 nm and a free spectral range of a solid etalon falls in any of the values of a range A of 1.04 to 1.07 nm, a range B of 1.42 to 1.61 nm, a range C of 2.07 to 2.1... | 10/06/2009 |
| 7593439 | Laser diode-pumped monolithic solid state laser device and method for application of said device An intracavity-doubled laser device, includes a pumping laser-diode, a Nd:YAG amplifying medium stimulated by a laser beam with a fundamental wavelength emitted by the laser diode, the output face of the amplifying medium being cut at the Brewster angle for the fund... | 09/22/2009 |
| 7593440 | MOPA laser apparatus with two master oscillators for generating ultraviolet radiation Laser apparatus including two different, pulsed MOPAs, one having a fundamental wavelength of 1064 nm and the other having a fundamental wavelength of 1564 nm, provide trains of optical pulses. The 1064-nm pulses are frequency tripled to 355 nm and the 1564-nm pulse... | 09/22/2009 |
| 7573921 | Laser light source A laser light source is disclosed consisting of first and second lasers that respectively generate laser beams of wavelengths λ1 and λ2. Wavelength λ1 is in the range of 0.9-1.0 μm. A nonlinear optical crystal uses the laser beam... | 08/11/2009 |
| 7551654 | Coherent light source and optical system In a coherent light source in which limitations on the wavelength of emitted light are relaxed, a coherent light source for simultaneously emitting a first light (3) and a second light (4) having a wavelength shorter than that of the first light (3 | 06/23/2009 |
| 7545837 | One-dimensional illumination apparatus and imaging apparatus A one-dimensional transverse multiple mode laser is used for a one-dimensional illumination apparatus. A pumping light source, and a laser medium and a wavelength conversion device (nonlinear optical crystal or a nonlinear optical device) which are disposed in a res... | 06/09/2009 |
| 7542491 | Wavelength converter and two-dimensional image display device The present invention aims to provide a wavelength converter capable of stably obtaining a W-class high-output green laser beam and a 2D image display device using this wavelength converter. By causing a polarization direction of a laser light source for gene... | 06/02/2009 |
| 7529281 | Light source with precisely controlled wavelength-converted average power Control of average wavelength-converted power and/or wavelength converted pulse energy is described. One or more seed pulses may be generated and amplified with an optical amplifier to produce one or more amplified pulses. The amplified pulses may be wavelength conv... | 05/05/2009 |
| 7526005 | Highly efficient second harmonic generation (SHG) vertical external cavity surface emitting laser (VECSEL) system A Vertical External Cavity Surface Emitting Laser (VECSEL) system is provided. The VECSEL system includes a laser device including an active layer in which laser light is generated by pumping and a reflector reflecting the laser light generated in the active layer; ... | 04/28/2009 |
| 7502393 | Light-emitting device having resonator and light source unit including the light-emitting device To provide a light-emitting device having a resonator capable of stably and efficiently taking out light. The device includes an active medium, a resonator for confining the light having a first wavelength emitted from the active medium within a three-dimensi... | 03/10/2009 |
| 7474678 | Optically pumped semiconductor laser An optically pumped semiconductor laser and an optical pumping method are disclosed. The optically pumped semiconductor laser includes an output mirror and a reflective mirror for forming a resonant region therebetween, a gain medium disposed between the output mirr... | 01/06/2009 |
| 7471707 | Low noise, intra-cavity frequency-doubling micro chip laser with wide temperature range A low-noise micro-chip laser includes a diode pump, a gain medium, a nonlinear crystal, and a birefringent material. The gain medium can receive the energy from the diode pump and generate a laser beam at a fundamental wavelength. The nonlinear crystal can generate ... | 12/30/2008 |
| 7460570 | Green coherent light generating device using even nonlinear crystals An object of the present invention is to provide a comparatively small-scale device, that is a second harmonic generating device of a laser beam with which high-quality and large output light is obtained efficiently and stably. Specifically, the second harmonic gene... | 12/02/2008 |
| 7460569 | Solid state UV laser An apparatus (10a) for scanning a light beam (16) through a crystal arrangement (22) that has a first frame member (28), a first support member (24) to support a first optical element (18) in the first frame member ( | 12/02/2008 |
| 7457330 | Low speckle noise monolithic microchip RGB lasers A method for reducing speckle noise of a monolithic microchip laser with intracavity beam combining and sum frequency mixing is based on time averaging of uncorrelated speckle patterns generated from a large number of independent longitudinal modes and comprises sch... | 11/25/2008 |
| 7447245 | Optically pumped semiconductor laser pumped optical parametric oscillator An optically pumped semiconductor pumped optical parametric oscillator (OPS-pumped OPO) includes an OPS laser resonator and an OPO resonator A portion the OPS laser resonator axis and the OPO resonator axis are collinear. An optically nonlinear crystal is located in... | 11/04/2008 |
| 7443892 | Wavelength conversion laser apparatus In a wavelength conversion laser device, a laser light source emits first wavelength light. A non-linear optical crystal converts the first wavelength light into second wavelength light. A rotational driver rotates the non-linear optical crystal so as to alter an in... | 10/28/2008 |
| 7440477 | Solid-state laser generator Two laser media are disposed at equal intervals between a first flat mirror, which is a resonator mirror comprising a resonator, and a second flat mirror for separating laser light that transmits second-harmonic laser light and reflects fundamental laser light towar... | 10/21/2008 |
| 7433374 | Frequency-doubled edge-emitting semiconductor lasers A frequency-doubled, edge-emitting semiconductor laser includes a separate confinement heterostructure surmounted by a waveguide including a converting layer of a periodically poled, optically nonlinear material. Fundamental radiation generated in the heterostructur... | 10/07/2008 |
| 7430231 | Vertical cavity surface emitting laser (VCSEL) arrays pumped solid-state lasers Solid-state lasers pumped by incoherent or partially coherent, monochromatic light sources such as high power VCSEL arrays. Efficient and uniform injection of pumping energy into gain medium is achieved through spectral match of the pump source with the gain medium ... | 09/30/2008 |
| 7426223 | Coherent light source and optical device It is easy to increase output with a wide stripe laser, but the lateral mode is a multimode, and the coupling efficiency is low with a single-mode fiber or a single-mode waveguide, creating problems in terms of increasing output. To solve these problems, the light e... | 09/16/2008 |
| 7414778 | Wavelength conversion devices and fabrication methods for same Particular embodiments of the present invention relate generally to a method of fabricating a wavelength conversion device. According to the method, the wavelength conversion device is fabricated by providing a nonlinear optical material and poling the nonlinear opt... | 08/19/2008 |
| 7415164 | Modeling scenes in videos using spectral similarity A computer implemented method models a scene in a video acquired by a camera. For each pixel in each frame of the video, a time series of intensities of the pixel is acquired. A harmonic series is extracted from samples of each time series using a sliding window. Di... | 08/19/2008 |
| 7413635 | Method for the fabrication of periodically poled Lithium Niobate and Lithium Tantalate nonlinear optical components A process for reducing the poling field of congruent LiNbO3 and LiTaO3 crystal-based nonlinear optical devices and for the production of domain structures with precise reproducibility of the main parameters by depositing a thin layer of a stoic... | 08/19/2008 |
| 7411991 | Tunable laser Embodiments of methods, apparatuses, devices, and/or systems for a tunable laser are described. An apparatus includes: a tunable laser cavity including at least three mirrors, at least one filter and a plurality of crystals, wherein the three mirrors are substantial... | 08/12/2008 |
| 7408963 | Medical laser apparatus A medical laser apparatus suitable for medical treatment, which is capable of obtaining a plurality of visible laser beams each having a different wavelength, but which has an inexpensive structure. A medical laser apparatus capable of selectively irradiating... | 08/05/2008 |
| 7406108 | Vertical external cavity surface emitting laser (VECSEL) The VECSEL includes: a heat spreader dissipating generated heat; a laser chip that is disposed on the heat spreader and is excited by a pump beam of a predetermined wavelength to emit a beam of a first wavelength; a Second Harmonic Generation (SHG) crystal that is d... | 07/29/2008 |
| 7403327 | Wavelength conversion element having multi-gratings and light generating apparatus using said element, and wavelength conversion element having cylindrical ferroelectric single crystals and light generating apparatus using said element A wavelength conversion element having multi-gratings free from damage propagation and a light generating apparatus using it, and a wavelength conversion element having multi-gratings to make a thermal distribution centrosymmetric, and being free from damage propaga... | 07/22/2008 |
| 7403549 | Wavelength conversion laser and image display A wavelength converting laser device includes a laser diode producing laser light and including an optical resonator having a pair of facing reflectors, including a reflecting surface having a shape reducing loss in the optical resonator, with regard to a specific h... | 07/22/2008 |
| 7400658 | Quasi-CW UV laser with low peak pulse-power Laser apparatus is disclosed in which fundamental-wavelength optical pulses delivered from a mode-locked laser resonator at a pulse-repetition frequency (PRF) are converted to harmonic-wavelength pulses in an optical delay loop. One example is disclosed in which the... | 07/15/2008 |
| 7400659 | Method and device for performing DBR laser wavelength modulation free of thermal effect The present invention is directed to a method and system for providing a three-level current scheme to a semiconductor laser to control beam wavelength and laser temperature. A first current is received into a gain section of the semiconductor laser and at least one... | 07/15/2008 |
| 7397829 | Vertical external cavity surface emitting laser Provided is a VECSEL capable of achieving an excellent efficiency of a SHG crystal and being manufactured in a compact size. The VECSEL includes a laser chip, an external mirror, an SHG crystal, a lens element, and a wavelength selective mirror. The laser chip gener... | 07/08/2008 |
| 7394841 | Light emitting device for visual applications A light emitting device comprises a waveguide having an electrically pumped gain region, a nonlinear medium, and an inclined mirror. Light pulses emitted from the gain region are reflected by the inclined mirror into the nonlinear medium in order to generate frequen... | 07/01/2008 |