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6839366 |
Laser frequency control using dithered control signal
A dithering signal is superimposed on a laser frequency control signal. In this way, laser frequency control may be achieved by employing measurements from a single photodetector. By sampling...
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6834063 |
Efficient angle tunable output from a monolithic serial KTA optical parametric oscillator
An arrangement ( 10 ) for efficiently shifting energy received at a first wavelength and outputting the shifted energy at a second wavelength. The arrangement ( 10 ) includes a laser ( 12 ) and an...
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6831933 |
Modular approach to the next generation, short wavelength, laser-like light sources
A system and method for implementing a next generation laser-like light source with Free Electron Lasers (FELs) are provided whereby the construction of a Free Electron Laser (FEL) is customized...
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6832024 |
Method and apparatus for fiber bragg grating production
A wide variety of Fiber Bragg writing devices comprising solid state lasers are provided. The solid state lasers emit moderate peak-power output beams which are suitable for efficient production of...
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6829260 |
Multipulse dye laser
A method for generating a long effective pulse duration output beam of laser radiation using a flashlamp-excited dye laser is described. A spaced series of excitation pulses is electronically...
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6829280 |
Device and a method for the generation of coherent x-ray radiation
A device ( 10 ) for producing high frequency radiation using a source of elliptically polarized radiation is disclosed based on: irradiating a frequency multiplication medium having a screw axis (...
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6826209 |
Ultrabroad-band variable-wavelength wavelength-multiplexed pulse waveform shaping device
An ultra-broadband, variable and multiple wavelength, waveform shaping apparatus is disclosed that excels with the ability to yield light pulses shaped in waveform, variable and multiple in...
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6822986 |
Method of controlling a wavelength of a semiconductor laser, optical module, optical transmitter, WDM optical transmission apparatus, and method of controlling a wavelength of an optical module
An optical module includes a light-emitting device that outputs laser light, a temperature detection unit that is arranged in proximity to the light-emitting device and detects the temperature of...
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6822978 |
Remote UV laser system and methods of use
A laser apparatus includes a modelocked laser system with a high reflector and an output coupler that define an oscillator cavity. An output beam is produced from the oscillator cavity. A gain...
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6816535 |
Co-alignment of time-multiplexed pulsed laser beams to a single reference point
An alignment system for co-aligning multiple laser beams to a single spatial reference point in real time. The alignment system includes a beam sampler for sampling the multiple pulsed laser beams....
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6816517 |
Micro-electromechanical devices for wavelength tunable lasers
An arrangement for tuning a micro-electro-mechanical (MEM) laser center wavelength to exactly match the passband of its associated filter. A dither wavelength locked feedback loop dynamically...
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6816530 |
Nonlinear semiconductor light sources
A monolithic apparatus has a laser optical cavity. The laser optical cavity has a multi-layer structure that includes a first active semiconductor multi-layer and a second semiconductor...
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6813429 |
Sources of, and methods for generating, optical pulses
A source of optical pulses, comprises an optical source operable to generate ultrashort optical pulses at a first wavelength; and an optical fiber amplifier comprising an optical fiber having a...
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6807210 |
Systems and a method for generating blue laser beam
An object of the present invention is to provide a practical device for generating blue laser beam having a wavelength of 457 nm. The present invention provides a device for generating blue laser...
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6795476 |
Focusing device
A focussing arrangement, in particular for laser devices ( 1 ), comprising a focussing mirror (M 1 ) arranged on a carrier which is displaceable in one plane, and having a spherical reflecting...
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6795475 |
Solid-state laser apparatus excited by laser light from semiconductor laser unit having increased resonator length
A semiconductor-laser-excited solid-state laser apparatus includes a solid-state laser element and a semiconductor laser unit including a resonator. The solid-state laser element is excited by...
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6785307 |
Method and arrangement for the self-calibration of a diode pumped solid state laser, particularly a tunable, diode pumped solid state laser
A method for the self-calibration of a tunable, diode pumped solid state laser in which the frequency or the wavelength of the laser radiation of the fundamental frequency and/or doubled frequency...
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6782012 |
Laser device and method of controlling Q-switched frequency converted laser, process and system using laser device
A harmonic Q switch laser device and its control method for obtaining a stable laser pulse while protecting a nonlinear optical crystal used for a wavelength conversion are presented. In this laser...
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6782014 |
Laser wavelength tripler with high quantum efficiency
Method and system for converting a first light beam having a first frequency into a second light beam having a second frequency. A pump photon having (angular) frequency 3ω (or 4ω) is provided...
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6775307 |
Light wavelength conversion module
The present invention provides a light wavelength conversion module in which an output light amount of a light wavelength conversion element increases monotonically as a driving current of a...
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6774881 |
Monochromatic R,G,B laser display system and method
A monochromatic red (R), green (G), blue (B) pulsed laser source with reduced speckle noise is disclosed. The R, G, B laser source can be used in a full color video/image display system,...
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6765934 |
Laser repetition rate multiplier
A method for recording an image on a photosensitive surface, comprising: producing a primary pulsed light beam; converting the primary light beam, in a light wavelength converter separate from the...
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6763042 |
Apparatus and method for frequency conversion and mixing of laser light
A method and device for the nonlinear combination of laser light which produces a beam of uniform intensity, high spatial purity, and high conversion efficiency. The method includes emitting a...
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6757096 |
Short pulse optical parametric oscillator system
Conventional short pulse optical parametric oscillator systems have relatively low repetition rates and cannot be pumped by continuous-wave lasers. The invention describes passively mode locked...
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6751240 |
Systems for generating short-pulse laser light
A method for generating ultra-short pulse amplified Raman laser light. Short pulse laser light is amplified, and a portion thereof is introduced into a Raman oscillator to produce compressed laser...
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6744555 |
Ultrashort-pulse source with controllable wavelength output
A multiple-wavelength ultrashort-pulse laser system includes a laser generator producing ultrashort pulses at a fixed wavelength, and at least one and preferably a plurality of...
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6741620 |
Methods and devices for efficient generation of ultraviolet light
Efficient devices and methods for producing ultraviolet light are provided. One such device includes a diode-pumped 946 nanometer solid state laser, a first nonlinear crystal for generating blue...
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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...
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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...
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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....
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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...
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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...
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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...
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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...
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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...
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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...
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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...
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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...
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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...
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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...
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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 [O 2 (a 1 Δ)], combining the O 2 (a 1 Δ)...
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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...
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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...
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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...
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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...
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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...
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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...
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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...
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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...
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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...
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