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| Number | Title | Issue Date |
| 6738398 | SHG laser light source and method of modulation for use therewith The invention provides an SHG laser light source whose optical output can be modulated using a simple mechanism without having to equip the light source with an external modulator, and a method of modulation for use with the SHG laser light source, wherein the SHG l... | 05/18/2004 |
| 6724787 | Low noise solid state laser A low noise laser includes a birefringent gain crystal arranged so that polarization is not constant within the gain crystal. The gain crystal and an intracavity optical element each have a nonzero polarization retardance. The total single-pass retardance is approxi... | 04/20/2004 |
| 6714569 | Design of optical superlattice to realize third-harmonic generation and multi-wavelength laser output and its application in the all-solid state laser The design of a special type of optical superlattice and its application in the all-solid state laser is involved in this invention. Nd ions doped laser crystal in common use can radiate three relatively intense spectral lines when excited: the first wavelength is a... | 03/30/2004 |
| 6714567 | Laser light generating apparatus and optical apparatus using the same Provided is a small-sized laser light generating apparatus capable of oscillating continuous light with a range of wavelengths of about 200 nm or less with stability at high conversion efficiency. Light with wavelength λ1 and light with wavelength λ | 03/30/2004 |
| 6711184 | Intracavity frequency-doubled diode-pumped laser A diode-pumped laser is disclosed with internal frequency doubling to prevent interfering power fluctuations in the laser radiation generated by the non-linear crystal at the start of the power adjustment in a simple and, therefore, inexpensive construction without ... | 03/23/2004 |
| 6711183 | Optical wavelength conversion device, coherent light generator, and optical information processing apparatus An optical wavelength conversion device includes: two or more non-linear optical crystals each having approximately identical phase matching conditions for a fundamental wave light and a second harmonic wave light; and a phase adjusting section inserted between the ... | 03/23/2004 |
| 6700906 | High energy, high average power solid state green or UV laser A system for producing a green or UV output beam for illuminating a large area with relatively high beam fluence. A Nd:glass laser produces a near-infrared output by means of an oscillator that generates a high quality but low power output and then multi-... | 03/02/2004 |
| 6697392 | Single wavelength laser module A single wavelength laser module utilizes difference-frequency light and includes a first laser device for oscillating light having a first wavelength and a second laser device arranged parallel to the first laser device for oscillating light having a sec... | 02/24/2004 |
| 6697391 | Intracavity resonantly enhanced fourth-harmonic generation using uncoated brewster surfaces An optical fourth-harmonic generation system includes a resonant cavity configured to support electromagnetic radiation of a fundamental frequency and a fourth-harmonic generator disposed within the resonant cavity produces electromagnetic radiation of a ... | 02/24/2004 |
| 6697390 | Extended lifetime harmonic generator A laser system includes a high reflector and an output coupler that define a laser oscillator, which produces a fundamental beam. A harmonic generator is positioned to receive at least a portion of the fundamental beam and produce a harmonic beam. The har... | 02/24/2004 |
| 6693945 | Scanning type laser microscope This invention provides a laser scanning microscope in which a harmonic generator for modulating a laser beam Q having passed through an optical fiber into a laser beam Qb having a wavelength different from that of the laser beam Q, and sending the laser ... | 02/17/2004 |
| 6690707 | Plasma assisted oxygen-iodine laser A process of producing a high energy chemical oxygen-iodine laser, including the steps of obtaining a quantity of oxygen in the singlet delta energy state [O2 (a1Ɗ)], combining the O2 (a1Ɗ) with a quantity of ... | 02/10/2004 |
| 6690692 | Third harmonic laser system A third harmonic laser system includes a fundamental wave resonator for generating fundamental laser beam, a second harmonic laser generator for converting fundamental laser beam to a second harmonic laser beam, and a third harmonic laser generator for mi... | 02/10/2004 |
| 6690691 | Laser oscillation apparatus A laser oscillation apparatus, comprising a laser beam emitting unit for emitting an excitation light, an optical resonance unit at least having a laser crystal and an output mirror, a nonlinear optical medium which is placed in the optical resonance unit... | 02/10/2004 |
| 6687268 | Surface emitting laser and photodiode, manufacturing method therefor, and optoelectric integrated circuit using the surface emitting laser and the photodiode The present invention provides a surface emitting laser and a photodiode which permit secure mounting even in mounting by flip chip bonding, and high-speed modulation. The present invention also provides a manufacturing method therefor and an optoelectric... | 02/03/2004 |
| 6683901 | High-power external-cavity optically-pumped semiconductor lasers External-cavity optically-pumped semiconductor lasers (OPS-lasers) including an OPS-structure having a mirror-structure surmounted by a surface-emitting, semiconductor multilayer (periodic) gain-structure are disclosed. The gain-structure is pumped by lig... | 01/27/2004 |
| 6683894 | Tunable IR laser source for MALDI A diode pumped solid state laser/OPO system widely tunable in mid infrared spectrum for infrared matrix assisted laser desorption/ionization (MALDI) mass spectroscopy is disclosed. Up to a few tens of milli-Joule, short pulse, tunable near infrared laser ... | 01/27/2004 |
| 6680956 | External frequency conversion of surface-emitting diode lasers Methods and devices are provided for converting a fundamental wavelength of a fundamental beam generated by a surface-emitting diode laser having a first resonating cavity. According to some embodiments, a first nonlinear crystal disposed in a second reso... | 01/20/2004 |
| 6678306 | Semiconductor laser device with wavelength selection and high-frequency modulation of driving current A semiconductor laser device includes a semiconductor laser element having a pair of cleavage planes which allows laser oscillation therebetween in a plurality of Fabry-Perot modes, an external resonator being coupled to the semiconductor laser element an... | 01/13/2004 |
| 6674782 | Self-adapting filters for fine-tuning laser emissions Laser type source of coherent luminous radiation including a resonant cavity, an amplification medium placed in the resonant cavity and a dynamic photosensitive material which is placed in the resonant cavity to form a self-adapting spectral and/or spatia... | 01/06/2004 |
| 6671297 | Wavelength conversion device A wavelength conversion device that converts a wavelength by second harmonic-wave generation and generates a laser beam, includes: a substrate having a plurality of electrodes; a semiconductor laser device mounted on the substrate and electrically connect... | 12/30/2003 |
| 6658029 | Laser beam-generating apparatus A deep-ultraviolet violet laser beam which is a harmonic and is generated inside a nonlinear optical element (101) is emitted outside the nonlinear optical element (101), being spaced from a green laser beam, which is a fundamental wave. The green laser b... | 12/02/2003 |
| 6654392 | Quasi-monolithic tunable optical resonator An optical resonator has a piezoelectric element attached to a quasi-monolithic structure. The quasi-monolithic structure defines an optical path. Mirrors attached to the structure deflect light along the optical path. The piezoelectric element controllab... | 11/25/2003 |
| 6650673 | Generation of short optical pulses using strongly complex coupled DFB lasers A compact source capable of generating continuously tunable high frequency microwave radiation and short optical pulses in the picosecond/sub-picosecond range is invented. It includes a laser structure having two lasers formed on the same substrate which ... | 11/18/2003 |
| 6650677 | Up-conversion laser An up-conversion laser unit in which a semiconductor laser of high output power can be used as a pump light source and the wavelength of up-converted laser light is suitable for display. The light of infrared wavelength is generated by the pump light sour... | 11/18/2003 |
| 6647034 | Method to improve optical parametric oscillator beam quality A method to improving optical parametric oscillator (OPO) beam quality having an optical pump, which generates a pump beam at a pump frequency greater than a desired signal frequency, a nonlinear optical medium oriented so that a signal wave at the desire... | 11/11/2003 |
| 6639921 | System and method for providing collimated electromagnetic energy in the 8--12 micron range A novel and efficient system and method for providing an output beam of collimated energy in the 8-12 micron range. The solid state system includes a pump laser (210) for providing an input beam and an OPO (250) using an x-cut potassium titanyl arsenate c... | 10/28/2003 |
| 6636537 | Laser apparatus A laser apparatus capable of emitting laser beams of a plurality of different wavelengths is disclosed. This apparatus includes an exciting light source, a solid-state laser medium which emits light of a plurality of peak wavelengths by light from the exc... | 10/21/2003 |
| 6633595 | Arrangement for the resonant frequency doubling of multimode laser radiation An arrangement for the resonant frequency doubling of multimode laser radiation with resonators is provided, including mirrors and an optically nonlinear material. The arrangement ensures a dispersion-free tuning of the length of a passive resonator, and ... | 10/14/2003 |
| 6633594 | Method for changing a wavelength of a laser light The efficiency of wavelength conversion of laser light can be improved by allowing incident laser light to pass through nonlinear optical crystals a multiple of times. In converting the wavelength of laser light to generate second- and higher harmonic wav... | 10/14/2003 |
| 6628696 | Multi-channel DWDM transmitter based on a vertical cavity surface emitting laser A multi-channel light source for use with a wavelength division multiplexed optical communication system includes a modified vertical cavity surface emitting laser (VCSEL) including a gain region and a resonator reflector layer at a first end for coupling... | 09/30/2003 |
| 6628681 | Laser apparatus A laser apparatus includes a master laser for emitting reference laser pulse light RPref having a wavelength of 914 nm and a pulse width of 0.5 ns; a microlens array for dividing the reference laser pulse light RPref into N pieces of light; optical fiber ... | 09/30/2003 |
| 6628680 | Photoconductive switch with integral wavelength converter The photoconductive switch comprises a laser that generates light having a first wavelength and a photoconductive switch element arranged to receive the light generated by the laser as incident light. The photoconductive switch element includes a photocon... | 09/30/2003 |
| 6621615 | Method and system for image display A light-modulating system, includes: a light source for emitting a sequence of light pulses at a period Tp ; a light modulator having a variable-width switching profile with rise and fall times Tr and Tf respectively, wher... | 09/16/2003 |
| 6618402 | Device for generating a plurality of laser beams The invention relates to a device for generating a plurality of laser beams. The device comprises: a laser source emitting an initial beam at P wavelengths; a wavelength splitter assembly for splitting the initial beam into N intermediate beams where N... | 09/09/2003 |
| 6618404 | Method for producing highly accurate frequency and FM of a laser A method and apparatus for accurately and precisely controlling the frequency (wavelength) and periodic frequency modulation of a laser are provided. An ADC (Analog to Digital Converter) is used to sample the output of a modified interferometer used as a ... | 09/09/2003 |
| 6614584 | Laser frequency converter with automatic phase matching adjustment A laser system includes a laser source and at least one orientationally adjustable and/or temperature-controlled nonlinear optical crystals. First and second position sensitive detectors respectively detect fundamental and higher frequency harmonic beams.... | 09/02/2003 |
| 6614815 | Blue laser based on interactions in fiber An approach to blue light in a single, integrated system is disclosed. An oscillator generates source radiation at a wavelength near 0.91 microns and a few milliwatts of power. This power is amplified to multi-Watt levels in a Neodymium-doped cladding-pum... | 09/02/2003 |
| 6603781 | Multi-wavelength transmitter Various aspects of multiple-channel light transmitting systems are disclosed. The system may include a multiple-wave length light source, a demultiplexer; a modulator, and a wavelocker. The wavelocker is configured to drive the light source such that said... | 08/05/2003 |
| 6603791 | High power fiber amplifiers with passive pump module alignment A hermetically sealed pump module for use with fiber devices is disclosed. The method and apparatus disclosed enable a pump module to be constructed that has a high coupling tolerance and which is inexpensive and easy to manufacture. The pump module may c... | 08/05/2003 |
