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7437083 Wavelength converter  
A wavelength converter for binary optical signals includes an interferometer structure ( 110 ) for generating an output signal by modulating a received local signal (LS) according to the modulation...
7403326 Doped fiber scene projection system and method  
This invention pertains to a scene projection system and a method for projecting a scene that can simulate light temperature of above 2000 K. The system comprises of a light source part for...
7379677 Method of wavelength conversion and wavelength converter  
The wavelength converter comprises (1) an optical multiplexer for multiplexing an amplitude-modulated first light and reference light, which is continuous light having a wavelength different from...
7352504 Optical fourier transform device and method  
Optical Fourier transform is executed over a wide time range. A quadratic function type optical pulse generator ( 7 ) generates a control light pulse of a shape expressed by a quadratic function or...
7266258 Two-photon absorption generated carrier lifetime reduction in semiconductor waveguide for semiconductor based raman laser and amplifier  
A semiconductor based Raman laser and/or amplifier with reduced two-photon absorption generated carrier lifetimes. An apparatus according to embodiments of the present invention includes optical...
7259906 System and method for voice control of medical devices  
A light source includes a wavelength shifter that is capable of shifting a shorter optical signal wavelength to a longer optical signal wavelength based at least in part on a Raman effect in a...
7218440 Photonic bandgap fiber for generating near-diffraction-limited optical beam comprising multiple coaxial wavelengths  
A photonic bandgap assembly used in a laser device for generating a near-diffraction-limited optical beam that comprises simultaneous multiple wavelengths. The photonic bandgap fiber assembly has a...
7184616 Method and apparatus for fiber Bragg grating production  
Fiber Bragg writing devices comprising solid state lasers are provided. The solid state lasers comprise optical parametric oscillators and emit moderate peak-power output beams at wavelengths which...
7106503 High-resolution optical microscope  
A direct-view optical microscope system is provided which uses high-energy light from a phenomenon known as non-resonant Raman scattering to illuminate a living biological specimen. One embodiment...
7016102 Apparatus and method for shifting the frequency of an optical signal by two-stage Raman scattering  
An apparatus for optically shifting the frequency of an input signal beam includes a first Raman medium that receives an input signal beam, a first pump beam, and a first reference beam to...
6992819 High-resolution optical microscope for quick detection of pathogens  
A direct-view optical microscope system is provided which uses high-energy light from a phenomenon known as non-resonant Raman-scattering to illuminate a biological specimen. One embodiment of the...
6958854 High efficiency stokes-seeding dual-cell raman shifter  
A method and apparatus for high-efficiency stimulated Raman Stokes and anti-Stokes scattering is described. A dual-Raman scattering cell configuration is disclosed. A variable pressure of the first...
6847477 Optical system for converting light beam into plurality of beams having different wavelengths  
A system for converting a single input beam of light into a plurality of spatially or angularly shifted output beams, each having a different wavelength supplies the single input beam of light to...
6690509 High-resolution optical microscope  
A direct-view optical microscope system is provided which uses high-energy light from a phenomenon known as non-resonant Raman scattering to illuminate a living biological specimen. One embodiment...
6618531 Variable wavelength short pulse light generating device and method  
A compact apparatus and a method for generating wavelength-tunable short optical pulses, which apparatus and method can change the wavelength of generated pulses without adjustment of an optical...
6593829 Microstrip dot termination usable with optical modulators  
A dot termination comprising a disk of thin film resistive material connects a transmission line on a substrate to a DC ground plane in a manner to provide broadband high frequency performance. The...
6587257 Non-linear subcarrier predistortion and upconversion system  
A method and apparatus for harmonically upconverting a phase and/or amplitude modulated subcarrier signal to a higher frequency through a non-linear optical link is disclosed. The method requires...
6535328 Methods and devices based on brillouin selective sideband amplification  
Opto-electronic devices and techniques using Brillouin scattering to select a sideband in a modulated optical carrier signal for amplification. Two lasers respectively provide a carrier signal beam...
6330104 Optical wavelength conversion using four wave mixing in fiber  
A wavelength conversion apparatus and method uses four wave mixing of a first wavelength and a control wavelength in an optical fiber to convert the first wavelength to a desired wavelength. Four...
6178036 Opto-electronic devices and systems based on brillouin selective sideband amplification  
Opto-electronic devices and techniques using Brillouin scattering to select a sideband in a modulated optical carrier signal for amplification. Two lasers respectively provide a carrier signal beam...
6163396 Optical wavelength converter  
A wavelength converter comprises a loop of optical fiber having an entry end (14) and an exit end (16). The entry end of the loop forms an input for a pump wavelength and the exit end forms an...
6101024 Nonlinear fiber amplifiers used for a 1430-1530nm low-loss window in optical fibers  
An apparatus and method are described for exploiting almost the full almost 25 THz of bandwidth available in the low-loss window in optical fibers (from 1430 nm to 1620 nm) using a parallel...
6047011 Optical harmonic generator  
H001791 Stimulated Brillouin scattering for fiber-optic links  
An attenuator/filter is disclosed that is inherently tuned and provides for a stimulated Brillouin scattering effect having a predetermined threshold that fixes the output thereof at a predefined...
5796761 High efficiency solid state raman laser system  
A high efficiency solid state Raman laser system for shifting the frequency of an input beam emitted by a laser pumping system is described. The laser pumping system suppresses relaxation...
5721748 Intracavity doubled solid state Raman laser system  
An intracavity doubled solid state Raman laser system for converting the frequency of a laser input beam emitted by a laser pumping system is described. A solid Raman medium is disposed within a...
5563730 Thallium arsenic sulfide crystals (t1.sub.3 AsS.sub.3) high efficiency nonlinear optical applications  
Crystals formed of Tl 3 AsS 3 provide very good materials for the nonlinear optical conversion efficiency. The crystals are useful in nonlinear optical devices such as harmonic generators and...
5453814 Illumination source and method for microlithography  
A light source having a solid state laser emitting a beam that is separated into a number of segments. Each segment is frequency shifted by a different amount so that the segments do not...
5341393 Laser-diode-pumped solid-state laser  
A laser-diode-pumped solid-state laser includes a solid-state laser rod which is doped with a rare-earth material such as neodium and has a wavelength converting function and a semiconductor laser...
5293394 Raman laser  
This invention provides a Raman laser wherein a light beam from a laser source (1) passes through a first chamber (3) and experiences Raman scattering, and then passes through a second chamber (9)...
5274494 Speckle suppression illuminator  
Disclosed is a method and apparatus for reducing or eliminating the speckle intensity distribution of an imaging and/or tracking system The benefits of utilizing a highly coherent source (12) as an...
5272717 Single focus backward Raman laser  
A single focus backward Raman laser that is a compact, efficient apparatus for converting light at a first wavelength provided by a pump laser to light at a Raman-shifted wavelength. The laser is...
5265106 Raman Laser  
According to the invention, the Brillouin-effect radiation created in the Raman cavity (14) is returned into the pumping laser (1) to increase the Raman output power.
5191587 Blue generation at the H-Beta Fraunhofer wavelength using noncritically phase-matched optical parametric generation in lithium borate (LiB.sub.3 O.sub.5)  
An optical blue parametric generation relies upon a nonlinear optical cryl of lithium borate (LiB 3 O 5 ) properly oriented to generate blue light when appropriately located in a resonant optical...
5142645 Method and apparatus for generating Fraunhofer line laser source using stimulated Raman scattering  
The present invention provides an apparatus and method for generating blue laser light having a wavelength corresponding to a solar Fraunhofer line. The blue laser light is at a frequency that has...
5110204 Velocity measurement by the vibrational tagging of diatomic molecules  
First and second relatively high power laser beams are directed into a volume enclosing a flow field of molecules of a molecular species. The beams are focussed to form an overlapping region of the...
5105428 Power laser source with optical control of beam scanning  
Disclosed is a laser source with beam scanning, of the type comprising: a pump laser source emitting a pump beam with a determined wavelength; a pressurized gas cell receiving the pump beam and...
5099147 Raman converter with variable wavelength distribution  
A Raman converter comprising an input optical pump beam (16) from a laser (18) that propagates through first and second Raman cells (12,24) and causes Stokes shifted waves (14,26) to be generated...
5090016 Multiple focus backward Raman laser apparatus  
A Raman laser apparatus for producing a high energy output beam with low divergence. An optical pump beam (14) propagates through first and second focuses (34,36) inside a cell containing a gaseous...
5077748 Laser system and method  
A laser diode produces a laser beam having a carrier frequency component and a sideband frequency component. An optical resonator receives the laser beam and substantially couples the carrier...
5072135 Power laser pulse generator  
Disclosed is a laser pulse generator in which a single pulse is generated from a train of pulses. The amplitude of this single pulse is the addition of the amplitudes of the pulses of the train of...
5062112 Two cell laser raman converter  
A two-cell Raman converter for generating a relatively large number of Stokes shifted waves from an input laser pump beam. A first lens focuses the pump beam into the first cell, whose output is...
5058117 Raman shifting device  
The invention relates to a Raman converter of improved design, which does not require an exact alignment of the optical elements. There is provided is backward Raman converter which comprises a...
5045719 Deflection cell for power laser beams  
This invention relates to deflection cells for laser beams. A deflection cell according to the present invention essentially comprises a deflector such as of the "acoustooptical" type, to deflect a...
5033051 Method of converting laser radiation into another wavelength range by Raman scattering and apparatus for implementing the method  
A method of converting the laser radiation of a pump laser into another wavelength range by stimulated Raman scattering in which the laser radiation of the pump laser is conducted through a Raman...
5002360 Frequency doubling optical waveguide with active phase matching  
An actively phase matched waveguide structure suitable for use as a frequency doubling device is described. The device includes a non-linear optical waveguide and phase matching of the waveguide is...
4987376 Frequency shifted laser transmitter  
A compact, powerful, single slab laser oscillator-amplifier system immersed in a high pressure gas which acts as a Raman shifting medium to shift the oscillator output wavelengths from the...
4973157 Fluid cell for Raman laser providing for fluid flow across the beam path  
A cell for holding a fluid medium for passing a beam of laser radiation through it to generate Raman shifted radiation is provided with a vaned agitator designed to effect flow of the fluid within...
4958910 Radiation pulse generation  
A radiation pulse generating assembly comprises a radiation generator such as a laser for generating pulses of radiation having pulse widths in the order of pico seconds. The pulses from the...
4933943 Intracavity Raman cell resonator  
A cavity which is resonant at a laser pumping frequency is defined by a reflective surface (92) and a mirror (110). A Raman medium (106) is contained within the cavity, as is a laser (90). A...
Matches 1 - 50 out of 117 1 2 3 >