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7453626 |
Four-wave mixing source of squeezed light for image processing and interferometry
A four-wave mixing squeezed light source includes: a mixing medium having chi(3) non-linear characteristics including two atomic ground states coupled to each other by transitions through...
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7453625 |
Method of producing domain inversion parts and optical devices
A comb electrode 3 is provided on a first main face 2 a and a uniform electrode 4 is provided on a second main face 2 b of a substrate made of a ferroelectric single crystal of a single...
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7446931 |
Compact multicolor light beam source
A plural wavelength light beam source may include one or more integrated laser diodes and a wavelength-conversion source such as a second harmonic generation laser. According to some embodiments...
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7446930 |
Method of inverting polarization by controlling defect density or degree of order of lattice points
A problem to be solved is to provide a method of forming domain inverted regions of short period in a ferroelectric single crystal in a controllable time period of application of voltage and an...
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7440161 |
Optical element and method for forming domain inversion regions
There is provided a stable optical element having a fine, uniform, and wide-ranging domain inversion structure in a ferroelectric crystal. This includes a plurality of domain inversions ( 101 )...
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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...
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7436586 |
Wavelength conversion system, optical integrated device and wavelength conversion method
A wavelength conversion system includes a Mach-Zehnder interferometer including two optical waveguides, a non-linear medium provided on one of the two optical waveguides, and a branching ratio...
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7436580 |
Optical buffer employing four-wave mixing
An optical buffer employing Bragg scattering (BS), in which two pump signals are combined with an input (data) signal in a four-wave mixing (FWM) medium to frequency convert the input signal into...
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7436579 |
Mobile charge induced periodic poling and device
Devices and methods are disclosed for realizing a high quality bulk domain grating structure utilizing mobile charges that are generated by means of photo-excitation in a substrate. An effect of...
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7433115 |
Light emitting device
A light emitting device comprises a first unit and a second unit, the first unit comprising: a first excitation light source comprising a laser element emitting blue wavelength band excitation...
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7428097 |
Poled structure with inhibition blocks
A poled structure comprises a ferroelectric substrate having a top surface and a bottom surface, at least one inhibition block positioned in the ferroelectric substrate, an electrode structure...
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7428096 |
Optical pulse compressor, optical function generator, optical pulse compression method, and optical function generation method
A small-sized, high-functionality optical pulse compressor capable of generating a low-power, high-repetition-frequency ultrashort pulse train used for ultrafast optical communication and...
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7426075 |
Wave generation by wave propagation phase-shift compensation in an non-linear optical medium
In a nonlinear optical medium such as the gallium arsenide, two collinear incident monochromatic waves are injected to generate a monochromatic wave. The medium induces between the three waves a...
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7423802 |
Illumination module
An illumination module may provide light in a plurality of colors including Red-Green-Blue (RGB) light and/or white light. The light from the illumination module may be directed to a 3LCD system, a...
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7421171 |
Efficient terahertz sources by optical rectification in photonic crystals and metamaterials exploiting tailored transverse dispersion relations
A system and a method for generating terahertz (THz) radiation are provided. The system includes a photonic crystal structure comprising at least one nonlinear material that enables optical...
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7414778 |
Wavelength conversion devices and fabrication methods for same
Particular embodiments of the present invention relate generally to a method of fabricating a wavelength conversion device. According to the method, the wavelength conversion device is fabricated...
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7413635 |
Method for the fabrication of periodically poled Lithium Niobate and Lithium Tantalate nonlinear optical components
A process for reducing the poling field of congruent LiNbO 3 and LiTaO 3 crystal-based nonlinear optical devices and for the production of domain structures with precise reproducibility of the...
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7408701 |
Multi-frequency light source
A multi-frequency light producing method and apparatus multiplies the number of optical channels present in an incident wavelength division multiplexed (WDM) signal light source by four-wave mixing...
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7403711 |
Optical digital-to-analog converter and method of optically converting digital data to analog form
An optical digital-to-analog (D/A) converter and a method of optically converting digital data into analog form. In one embodiment, the optical D/A converter includes: (1) a splitter configured to...
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7403327 |
Wavelength conversion element having multi-gratings and light generating apparatus using said element, and wavelength conversion element having cylindrical ferroelectric single crystals and light generating apparatus using said element
A wavelength conversion element having multi-gratings free from damage propagation and a light generating apparatus using it, and a wavelength conversion element having multi-gratings to make a...
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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...
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7397598 |
Light source unit and light irradiation unit
In nonlinear optical crystal 183 D, each step of wavelength conversion can be performed using another fundamental wave that is output from light output unit 161 2 , without using the fundamental...
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7394990 |
All optical wavelength converter
An optical wavelength converter receives an input optical signal, and in response, generates an output optical signal having a wavelength that is different from the wavelength of the received input...
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7394588 |
Wavelength converter structure and method for preparing the same
A wavelength converter structure according to one aspect of the present invention comprises a ferroelectric substrate, a ridge positioned on the ferroelectric substrate, a plurality of first...
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7391024 |
Steady-state non-equilibrium distribution of free carriers and photon energy up-conversion using same
An apparatus is disclosed for the conversion of radiation. The apparatus includes a mesoscopic sized region, an interface surrounding the mesoscopic sized region and contacting the mesoscopic...
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7388710 |
Optical parametric amplifier
An optical parametric amplifier of the invention comprises a nonlinear amplification section to which a signal light and a pump light are injected via a coupler. The nonlinear amplification section...
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7388709 |
Multiple path infrared energy source
A multiple path light source has a first and second laser source that generate low power continuous wave laser beam at wavelength λ1 and λ2 respectively. A pump laser source generates a high...
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7385752 |
Disposal of residual radiation from a frequency-conversion process
A frequency-conversion arrangement including one or more optically nonlinear crystals is located in an enclosure. Radiation residual from the frequency conversion is directed into an optical fiber...
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7382524 |
Photo-electronic frequency multiplier
An exemplary photo-electronic frequency multiplier ( 100 ) includes an intervening optical signal generator ( 10 ), a pair of photo-electronic conversion circuits ( 21, 22 ), a differential...
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7382523 |
Beam-guiding and/or frequency-converting optical system and method for producing the same
The present invention relates to a beam-guiding and/or frequency-converting optical system as well as to a method of manufacturing same, wherein a beam-emitting optoelectronic component ( 1 ),...
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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...
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7379652 |
Method and apparatus for detecting optical spectral properties using optical probe beams with multiple sidebands
Techniques for detecting optical spectral properties of a target are described. The technique includes providing an optical carrier which has an optical frequency bandwidth which is narrow compared...
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7378636 |
Method of evaluating non-linear optical crystal and device therefor and wavelength conversion method and device therefor
A method of evaluating a non-linear optical crystal used for non-linear wavelength conversion of laser beam which enables the non-linear optical crystal to be evaluated before the crystal is...
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7372621 |
Wavelength converting devices
A wavelength converting device 1 has a ferroelectric layer 6 made of a ferroelectric material. The ferroelectric layer has a wavelength converting portion A having a ridge-type optical...
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7369779 |
Regeneration of optical phase modulated signals
A regenerator for restoring the originally encoded optical phase of a differential-phase-shift-keyed signal. In an embodiment, the regenerator simultaneously provides limiting amplification and...
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7363018 |
High speed electrical interconnect using an optically distributed carrier signal
Described are a method and a device for high speed transmission of a data signal across an electrical interconnect in an integrated circuit. An optical carrier is modulated with a local oscillator...
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7359111 |
Optical steering device and method
An optical device for steering radiation comprises a superprism structure a negative index of refraction for electromagnetic radiation having a frequency of 2ω only, and a photon upconversion...
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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...
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7349609 |
Terahertz radiation generation and methods therefor
Terahertz radiation generation systems and methods are implemented using a variety of methods and devices. According to an example embodiment of the present invention, method for generating...
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7339722 |
Hybrid nonlinear optical conversion and optical parametric oscillation
A nonlinear frequency conversion system includes a first element including a first medium configured to perform type II birefringent phase matching (BPM) of a pump beam to provide corresponding...
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7339720 |
Frequency multiplied optical electronic oscillator
The present invention is directed to systems and methods which provide a widely tunable, low-noise, synthesized microwave source with an OEO oscillator.
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7339719 |
Packaging of frequency-doubled, extended-cavity, surface-emitting laser components on a common substrate
In one embodiment, a laser module comprising an optical element, a frequency converter, a selective reflector, and one or more surface-emitters, each coupled to a common substrate, wherein the...
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7339718 |
Generation of terahertz radiation in orientation-patterned semiconductors
A method for generating THz radiation comprises illuminating a semiconductor crystal with an optical pulse train. The semiconductor crystal comprises alternating parallel crystal domains, with each...
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7339717 |
Method and system for use in optical code division multiple access
A method and device are provided for automatically generating a key and a conjugate key to be used in an optical code division multiple access system. The method comprises applying a down...
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7336880 |
Wavelength converting element and method of manufacturing thereof
A wavelength converting element is provided in which a fundamental wave with respect to an optical crystal substrate and a peak of a vertical transverse mode of a second harmonic are made to...
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7336413 |
Nonlinear fiber, wavelength conversion method and wavelength conversion device
A nonlinear fiber having a third-order nonlinear coefficient of at least 30 W −1 km −1 , and its cladding containing Er or Tm at a portion within 3 μm from the interface with its core. A...
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7330300 |
Optical frequency mixer and method for the same
An optical frequency mixer according to one embodiment of the present invention comprises a V-shaped resonant cavity including a first reflective surface, a second reflective surface and an output...
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7330299 |
Optical amplifying arrangement using carbon nanotubes
A method of using a carbon nanotube assembly comprising: arranging a signal responsive array of nanotubes on a substrate, and heterodyning a signal processed by the array of nanotubes on the...
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7329316 |
Manufacturing method for QPM wavelength converter elements, QPM wavelength converter element, and medical laser apparatus using it
A manufacturing method for quasi phase matching (QPM) wavelength converter elements using crystal quartz as a base material in which twins are periodically induced, comprises a step of periodically...
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7327768 |
Wavelength conversion module
A wavelength conversion module according to the present invention includes an external resonator, a semiconductor laser module and a wavelength conversion device for converting a wavelength of...
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