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7443567 Image enhancement of a microdisplay through acoustooptics  
A method of processing light includes generating a beam of light and periodically diffracting the beam of light by an acoustooptic cell to produce diffracted light having at least one direction...
7414773 Device for dispersing light pulses of which the spectral amplitude is programmable  
Device for dispersion of light pulses of an optical beam constituted by two dispersive prisms with the same vertex angle, mounted head to tail, the optical input surface of the first prism being...
7405859 Method and apparatus for selecting wavelength  
A wavelength selecting apparatus includes a wavelength selecting filter and that a monitoring filter are similar acousto-optic tunable filters; a light source that outputs light having a specific...
7405858 Acousto-optic tunable filter control apparatus automatically adjusting frequency and power of radio frequency signal  
An AOTF control apparatus, which applies an RF signal to an AOTF to allow a selected light to pass through the AOTF, includes: a first calculating unit calculating a relationship between a...
7405414 Method and apparatus for patterning a workpiece  
The present invention relates to a method for creating a pattern on a workpiece sensitive to electromagnetic radiation. Electromagnetic radiation is emitted onto a computer controlled reticle...
7391976 Optical acoustoelectric transducer  
An optical acoustoelectric transducer having a directivity pattern like a better 8 by receiving by a light-receiving element a reflected fraction of the light from a light-emitting device...
7385749 Silicon acousto-optic modulator  
An acousto-optic modulator includes a (100), (010) or (001) single crystal silicon acousto-optic interaction medium, and at least one transducer for emitting an acoustic wave attached to the single...
7372612 High performance compact external cavity laser (ECL) for telecomm applications  
An optical tunable laser design ( 100 ) for the optic telecommunication industry is disclosed in this invention. This new design is economical, reliable, robust and with superior optical...
7349632 Method of wavelength selection control and wavelength variable filter device  
A method of wavelength selection control is disclosed. The method includes detecting reference RF frequencies by varying the frequency of a RF signal supplied to a reference acousto-optic tunable...
7324265 Tuning a narrow band filter for telecommunication applications with an acoustic optical tunable filter  
An optical tunable filter that includes an tunable acousto-opto deflector (AOD) for deflecting a broad band beam to an expander for projecting the broad band beam to a set of grating for generated...
7295739 Coherent DUV illumination for semiconductor wafer inspection  
An apparatus for inspecting a specimen, such as a semiconductor wafer, is provided. The apparatus comprises a laser energy source, such as a deep ultraviolet (DUV) energy source and an optical...
7283290 Acousto-optic devices having highly apodized acoustic fields and methods of forming the same  
An acousto-optic (AO) device for generating a highly apodized acoustic wave field includes a piezoelectric transducer crystal for emitting an acoustic wave having a ground electrode disposed on one...
7245789 Systems and methods for minimally-invasive optical-acoustic imaging  
This document discusses, among other things, an imaging guidewire that includes one or more optical fibers communicating light along the guidewire. At or near its distal end, one or more blazed or...
7239439 Communication system using variable pattern acousto-optic modulation  
A communication system uses a beam of light; a beam expanding lens; a lens for collimating the expanded beam into a column of collimated light; a plurality of acoustic transducers to project...
7133182 AOM frequency and amplitude modulation techniques for facilitating full beam extinction in laser systems  
Digital control of frequency and/or amplitude modulation techniques of an intracavity and/or extracavity AOM ( 60 ) facilitate substantially full extinction of a laser beam ( 90 ) to prevent...
7102809 Acoustic-optic devices utilizing tellurium crystals  
Acoustic-optic devices which use a crystal of tellurium into which is launched acoustic shear waves by a lithium niobate transducer in accordance with an input RF signal. Tellurium used in the...
7092139 Acousto-optical variable filter  
An acousto-optical tunable filter, comprising planar optical waveguide ( 2 ) for propagation of light beam ( 14 ), and arranged sequentially along the path of the light radiation: a means for...
7075698 Variable lenslet array  
The disclosed invention provides a variable lenslet array system that comprises an acousto-optic medium and at least one acoustic wave generator that is positioned adjacent to the acousto-optic...
7054055 Acousto optic element  
An acousto optic element comprises optically transparent acousto optic medium having light incoming plane, light outgoing plane facing light incoming plane, transducer joining plane, and inclined...
7027199 AOM modulation techniques for facilitating pulse-to-pulse energy stability in laser systems  
Digital control of frequency and/or amplitude modulation techniques of an intracavity and/or extracavity AOM ( 60 ) facilitate substantially full extinction of a laser beam ( 90 ) to prevent...
7016101 Scanning microscope and optical element  
A scanning microscope that defines an illumination beam path and a detection beam path, having an objective that is arranged in both the illumination beam path and the detection beam path, is...
7006274 Compact acousto-optical modulator  
A lightweight, compact image projection module, especially for mounting in a housing having a light-transmissive window, is operative for causing selected pixels in a raster pattern to be...
6990260 Extended intensity-based optical sensor  
An extended optical sensor comprises a plurality of equally spaced intensity-based point sensors connected in parallel such that the optical path lengths are the same within the extended sensor...
6982821 Optical beam position active sensing using satellite beams  
A directed beam position sensing system and method includes a beam source configured to emit a beam. A satellite beam generator is aligned to receive the beam and to transmit a main beam portion...
6982818 Electronically tunable optical filtering modules  
Electronically agile optical filtering modules for equalizing light propagation differences in at least two spaced optical beam pathways in the modules. The modules use optical polarization...
6967764 Optical arrangement and scan microscope  
An optical arrangement for spatially separating an illumination light beam and a detection light beam includes an acousto-optical component that splits the detection light beam by birefringence. A...
6930819 Miniaturized external cavity laser (ECL) implemented with acoustic optical tunable filter  
An optical tunable laser design for the optical telecommunication industry is disclosed in this invention. This new design is economical, reliable, robust and with superior optical performances....
6906844 Mounting system for an optical assembly of a photoelastic modulator  
An improved system for mounting an optical assembly of a photoelastic modulator (PEM) to permit free vibration of the optical assembly without introducing any stress or strain on the optical...
6904188 Acousto-optic tunable filter having improved wave-damping capability  
This invention relates to an acousto-optical tunable filter generally of the kind described in U.S. Pat. No. 6,266,462. More specifically, the invention relates to a filter and its construction,...
6903862 Ultraviolet acoustooptic device and optical imaging apparatus using the same  
The present invention provides an ultraviolet acoustooptic device including: a radio-frequency signal input part; a transducer unit for converting a radio-frequency signal into a mechanical...
6885497 Laser method and apparatus  
A single-ended laser device for locating reflective targets within a given surveillance volume, said apparatus comprising: a body of material excitable to emit electromagnetic radiation at...
6885491 Diffraction-optical component, illumination system and exposure system comprising such a diffraction-optical component as well as an exposure method employing such an exposure system  
A diffraction-optical component for providing a radiation-diffracting grating structure is proposed, comprising a surface wave device including a substrate 43 , a surface wave source 47 ...
6870658 Energy limiter for amplitude modulated RF waveforms  
An RF power controller arrangement prevents excessive RF power-based thermal loading of an RF signal processing device, such an as acousto-optic modulator, by controllably constraining the product...
6867919 Optical arrangement and microscope  
An optical arrangement for directing illumination light to a sample and for directing the detection light proceeding from the sample to a detector has a spectrally selective influencing means in...
6853475 Wafer defect detection system with traveling lens multi-beam scanner  
A system for inspecting a specimen, such as a semiconductor wafer that uses a laser light source for providing a beam of light. The beam is applied to a traveling lens acousto-optic device having...
6853474 Process for fabricating optical switches  
A process for fabricating micro-acousto-optic modulators using microelectronics fabrication technology. First, a set of trenches is etched into a substrate. Then, a transducer material is deposited...
6819472 Optical modulator and communications system including the optical modulator  
An optical modulator includes an optical waveguide, a modulating electrode, a conductive layer, an electric signal input section, and connector members. At least a portion of the optical waveguide...
6806986 Wavelength converter and wavelength converting apparatus  
A wavelength converter has a phase modulated periodically modulated structure, where a nonlinear optical coefficient is periodically modulated at a fundamental period Λ 0 and the phase of the...
6804042 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...
6771412 Acousto-optical devices  
The present invention relates to acousto-optic applications of parametric optical apparatuses that use the mechanical energy of elastic oscillations to convert light over a wide range of...
6765709 Active compensation for transient thermal effects in acousto-optic devices  
A multi-channel acousto-optic modulator contains an integrated structure for providing active compensation for transient thermal effects. A plurality of electro-thermal elements in the form of...
6754403 Acousto-optic add/drop multiplexer with retro-reflection and wavelength selective optical cross-connect  
An acousto-optical add/drop multiplexer includes an acousto-optical switch including a first optical port coupled to a first polarization splitter, at least one polarization converter coupled...
6754000 Optical arrangement, and method for the deflection of light beams  
An optical arrangement having a light source, preferably a laser, for generating a light beam ( 1 ); at least one acoustooptical deflection device ( 3 ) for the light beam ( 1 ); and a correction...
6751009 Acousto-micro-optic deflector  
An acousto-micro-optic deflector (AMOD) is provided. This device uses a special combination of an acousto-optic deflector (AOD) and a micro-optic deflector (MOD) to provide agile gimballess beam...
6741382 Acousto-optic activity for acoustic imaging  
A first medium having an acousto-optic activity and a second medium are combined to form a net medium having a net acousto-optic activity greater than the acousto-optic activity of the first...
6741381 Modified tunable acousto-optic filter  
Acousto-optical filter systems for filtering a light beam by generating undiffracted and diffracted light beams within a birefringent crystal and by suppressing the diffracted beam within or at a...
6718076 Acousto-optic tunable filter with segmented acousto-optic interaction region  
An acousto-optic tunable filter that includes a polarization beamsplitter, a multi-segment interaction region and a polarization beam combiner is described. The polarization beamsplitter generates...
6665112 Optical reticle substrate inspection apparatus and beam scanning method of the same  
An optical reticle substrate inspection apparatus is provided with a laser, a first acoustooptical element which scans a laser beam output from the laser, an a second acoustooptical element which...
6657222 Photon source  
A photon source, comprising a first semiconductor region having excess carriers with a first conductivity type, and a second semiconductor region having excess carriers with a second conductivity...
6654127 Optical delay line  
One embodiment of the present invention is an optical delay line that comprises a plurality of optical elements in optical communication with each other, wherein: (a) at least one of the plurality...
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