Patents
Sitemap › H01 - Basic electric elements › H01S - Devices using stimulated emission › H01S 3 - Lasers, i.e. devices for generation, amplification, modulation, demodulation, or frequency-changing, using stimulated emission, of infra-red, visible, or ultra-violet waves
Patents for H01S 3 - Lasers, i.e. devices for generation, amplification, modulation, demodulation, or frequency-changing, using stimulated emission, of infra-red, visible, or ultra-violet waves (57,482)
03/1991
03/26/1991US5003543 Laser plasma X-ray source
03/26/1991US5003456 Circuit for providing fast output current control in a current mode switching power supply
03/26/1991US5003179 Full color upconversion display
03/26/1991US5001873 Method and apparatus for in situ cleaning of excimer laser optics
03/26/1991CA1282153C Techniques for reducing and/or eliminating secondary modes in a dye laser oscillator
03/26/1991CA1282125C Pulse forming networks
03/22/1991CA2025871A1 Solid state laser device for lithography light source and semiconductor lithography method
03/21/1991DE3930495A1 Laser focus adjuster setting position and dia. valve of beam - applies correction valve to unit to adjust position of focussing lens
03/20/1991EP0417989A2 Quantum well device and apparatus comprising the device
03/20/1991EP0417952A2 Shaping using area patterning mask
03/20/1991EP0417441A1 Double core active-fiber optical amplifier having a wide-band signal wavelength
03/20/1991EP0417248A1 Electrode for pulsed gas laser, and process for its manufacture.
03/20/1991EP0254731B1 Frequency agile spectrometer
03/20/1991EP0242393B1 Rf-excited co2 waveguide laser with extended tuning range
03/20/1991CN2073622U Constitutioanl type of three notchs adjusting top of stiff sealed helium-neon laser pipe
03/20/1991CN1049966A Laser shaping with area patterning mask
03/19/1991US5001721 Apparatus for purifying laser gas
03/19/1991US5001718 Telescopic thermal lens compensating laser
03/19/1991US5001717 Cavity dump laser controller
03/19/1991US5001716 Tunable electro-optic Q-switch, and lasers using same
03/19/1991US5000557 Kinematic resonator support
03/19/1991CA1281803C Magnet-electro-optic effect light modulator
03/16/1991WO1991004593A1 Square optical pulse generator
03/13/1991EP0416676A2 Nonlinear optical switch utilising organic conjugated material and four wave mixing techniques
03/13/1991EP0416195A2 Semiconductor laser device
03/13/1991EP0416122A1 Nc laser
03/13/1991EP0222810B1 Optical homodyne detection
03/12/1991US4999840 Stabilized synchronously pumped dye laser
03/12/1991US4999839 Amplifier-oscillator free electron laser
03/12/1991CA1281403C Laser system
03/12/1991CA1281402C Continuous wave, frequency-doubled solid state laser systems with stabilized output
03/12/1991CA1281401C Method for stabilizing the operation of an axial gas laser and axial gaslasers
03/08/1991WO1991003849A1 Coupled-cavity q-switched laser
03/08/1991WO1991003848A1 Method for ascertaining mode hopping free tuning of resonance frequency and the q-value of an optical resonator and a device for carrying out the method
03/08/1991CA2066439A1 Coupled-cavity q-switched laser
03/08/1991CA2065408A1 Method for ascertaining mode hopping free tuning of resonance frequency and the q-value of an optical resonator and a device for carrying out the method
03/07/1991WO1991003850A1 A laser
03/07/1991WO1991003086A1 Gas laser
03/07/1991WO1991003084A1 Free-electron laser oscillator for simultaneous narrow spectral resolution and fast time resolution spectroscopy
03/07/1991WO1991002991A1 Diffraction grating assembly
03/07/1991CA2060180A1 Laser
03/06/1991EP0415823A1 Free electron laser
03/06/1991EP0415645A1 Interferometric devices for reducing harmonic distortions in laser communication systems
03/06/1991EP0415600A1 Gain medium for radiant energy source
03/06/1991EP0415438A2 Optical amplifier and optical communication system provided with the optical amplifier
03/06/1991EP0415167A1 An optical amplifier
03/06/1991EP0414736A1 Pre-ionization device, in particular for x-ray pre-ionization in discharge-pumped gas lasers, in particular excimer lasers
03/06/1991EP0414733A1 Scatter symmetrization in multi-mode ring laser gyros.
03/06/1991CA2021110A1 Laser shaping with an area patterning mask
03/05/1991US4998260 Method for correcting the path of a gas laser beam
03/05/1991US4998259 Gatling gun laser pulse amplifier using rotating mirrors
03/05/1991US4998254 Stabilized synchronously pumped dye laser
03/05/1991US4998039 Ultracompact flow loop with no rotating components
02/1991
02/27/1991EP0414430A1 Lasers
02/27/1991EP0414194A2 Laser pumped atomic frequency standard with high frequency stability
02/27/1991CN1049575A Pulse preionizing tube-strip electron
02/27/1991CN1011843B Laser arrangement with high-tension pulse generator and method of generating pulse
02/26/1991US4996693 Input/output ports for a lasing medium
02/26/1991US4995546 Device mounting
02/21/1991DE3926965A1 Gas laser with diffusion cooling - has magnetic field set up perpendicular to axis of tube
02/21/1991DE3926956A1 Laser with coaxial pump system - has discharge plasma which does not fill the entire laser discharge space
02/20/1991EP0413320A2 Semiconductor laser amplifier with controlled mirrors for optical signals
02/20/1991EP0222909B1 Dither signal remover for a dithered ring laser angular rate sensor
02/20/1991CN1049434A Double active-fiber optical amplifier having wide-band signal wavelength
02/20/1991CN1049429A Potassium niobite self-pumping inter-conjugate
02/20/1991CN1049414A Variable focus traveling-wave pump method
02/19/1991US4995046 Room temperature 1.5 μm band quasi-three-level laser
02/19/1991US4993812 Semiconductor laser optical system
02/19/1991US4993798 Laser arrangement in optical communication system
02/19/1991US4993793 Machine for splitting and controlling a light beam
02/14/1991DE3926734A1 Gaslaser Gas laser
02/13/1991EP0412727A2 Optical communication system
02/13/1991EP0412555A1 Gas laser device
02/13/1991EP0412501A1 Oxidation of carbon monoxide and catalyst therefor
02/13/1991EP0412165A1 Turboblower for lasers and laser oscillator
02/12/1991US4993042 Device for mounting a window on a gas-discharge laser
02/12/1991US4993041 Laser provided with an improved securing arrangement for its active medium and securing arrangement intended for the laser
02/12/1991US4993040 Ring laser gyro
02/12/1991US4993039 Ring laser gyro
02/12/1991US4993038 Laser devices, laser system including the laser devices and output mirror for the laser system
02/12/1991US4993037 High speed axial flow gas laser generator
02/12/1991US4993034 Ion exchanging laser glass with group 1a oxide
02/12/1991US4993031 Broadband raman beam combiner
02/12/1991US4992750 Coupling mechanism for efficient conversion of axisymmetric beam profiles into profiles suitable for diffraction
02/12/1991US4992719 Stable high voltage pulse power supply
02/12/1991US4991931 Method of driving optical wavelength converter module
02/12/1991CA1280198C Cr-doped scandium borate laser
02/07/1991WO1991001580A1 Gas discharge arrangement
02/07/1991WO1991001193A2 Coupling mechanism for efficient conversion of axisymmetric beam profiles into profiles suitable for diffraction-free transmission in free space
02/07/1991DE3925886A1 Stable short wave laser - is arranged such that dia. of plasma is least when discharge current passes through zero
02/07/1991DE3924857A1 Laser with extended control range - has movable absorbing element in beam path to enable variation of performance
02/07/1991DE3919732C1 Gas laser with gas flow channel - propels gas along path through gap across which electric gas discharge takes place
02/07/1991DE3919730C1 Gas laser with discharge chamber forming curved diffuser - deflecting gas stream by at leat 90 deg. and with openings or slit(s) forming jet(s)
02/07/1991DE3919727C1 Gas laser with drum like generator - has rotating gas flow passed along electrical discharge path and then returned to blower via cooling section
02/07/1991CA2019136A1 Oxidation of carbon monoxide and catalyst therefor
02/06/1991EP0411942A2 Parametric pulsed laser system
02/06/1991EP0411886A2 Chrysoberyl solid state lasers
02/06/1991EP0411824A2 Dither arrangements
02/06/1991EP0411635A2 Method of stabilizing the laser beam and apparatus utilizing the same
02/06/1991EP0411134A1 Turbo-blower for laser and laser oscillator using the same
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