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| Number | Title | Issue Date |
| 7612935 | Third-order optical autocorrelator for time-domain operation at the telecommunication wavelengths A device and method for producing a third harmonic signal from an optical pulse of wavelength k. In the device and method, an optical pulse at a wavelength k is incident on a material including at least one molecule having a formula D—U—A, where D is an electron... | 11/03/2009 |
| 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 the wavelength of the first light, (2) an optical fiber for propagatin... | 05/27/2008 |
| 7352505 | Device and method for converting an optical frequency To optimise the transformation rate (efficiency) in the optical frequency conversion of laser beams of ultra-short light pulses in optically non-linear media such as a crystal (56), a double refracting crystal (54) is arranged in the beam path before t... | 04/01/2008 |
| 7339148 | Confocal microscope A scanning optical microscope including: a light source; a lens for altering the cross-sectional shape aspect ratio of a beam of light emitted from the light source; at least one lens for converging beams of light of different cross-sectional shape aspect ratio to c... | 03/04/2008 |
| 7339721 | Optical fiber light source based on third-harmonic generation An optical-fiber-based light source that generates light via third-harmonic (TH) generation is disclosed. The light source includes a pump light source that provides pump light having a fundamental mode of wavelength λP. The light source also includes an... | 03/04/2008 |
| 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. ... | 03/04/2008 |
| 7336413 | Nonlinear fiber, wavelength conversion method and wavelength conversion device A nonlinear fiber having a third-order nonlinear coefficient of at least 30 W−1km−1, and its cladding containing Er or Tm at a portion within 3 μm from the interface with its core. A wavelength conversion method of making a signal light ha... | 02/26/2008 |
| 7295584 | System and method for generating multi-wavelength laser source using highly nonlinear fiber A number of embodiments provide multi-Wavelength Laser Source (MWLS) designs based on Super Continuum (SC) generation using Highly Non-Linear optical Fiber (HNLF). Advantageously, in some embodiments this technology only needs a single wavelength locking mechanism t... | 11/13/2007 |
| 7292387 | Methods and systems to enhance multiple wave mixing process Frequency conversion methods are taught wherein non-collinear phase matching configurations may be implemented in non-linear crystals used in three wave mixing processes such that the frequency conversion efficiency is enhanced through walk-off compensation while al... | 11/06/2007 |
| 7286282 | Wavelength conversion method, wavelength conversion laser, and laser beam machining apparatus A fundamental laser beam is wavelength converted through nonlinear optical crystals by traveling in one direction, sequentially through two nonlinear optical crystals arranged in series. A wavelength-converted laser beam is generated and includes wavelength-converte... | 10/23/2007 |
| 7239809 | Electrical pulse transformation using optical delay lines A recirculating optical delay line 30 has a laser 32 controlled by wavelength control 33 so as to vary the wavelength of radiation over time to provide a first input 34 to an optical modulator 35. The modulator 35 modulates ... | 07/03/2007 |
| 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 are suitable for efficient production of fiber Bragg gratings withou... | 02/27/2007 |
| 7174198 | Non-invasive detection of analytes in a complex matrix A system and method for determining the concentration of analytes of interest in complex matrices is provided. According to one aspect of the present invention, near-infrared analytical radiation is generally directed onto a portion of a specimen containing the anal... | 02/06/2007 |
| 7161726 | Linear optical modulators and method of linear optical modulation A device that comprises: a) a first optical waveguide; b) a second optical waveguide; c) an optical coupling region including the first and second optical waveguides, the optical coupling region characterized as having at least one coupling length and comprising a f... | 01/09/2007 |
| 7151415 | Injection locked dual opto-electronic oscillator An injection locked dual opto-electronic oscillator having a master oscillator which generates a high Q RF output signal with a plurality of harmonic signals within a predetermined pass band. A slave oscillator has a modulation input coupled to the output signal fro... | 12/19/2006 |
| 7106497 | Low-noise optical frequency converter A low-noise optical frequency converter uses a predetermined microwave electric signal to modulate an input light wave and output a light wave that includes a first-order upper-sideband or lower-sideband and a third-order lower-sideband or upper-sideband. The freque... | 09/12/2006 |
| 7068894 | All-optical wavelength converter based on Sagnac interferometer with an SOA at asymmetric position According to at least one embodiment, a system comprises a Sagnac interferometric loop and a semiconductor optical amplifier (SOA) located at an asymmetric position on that loop, wherein the Sagnac interferometric loop and the SOA are operable to perform signal conv... | 06/27/2006 |
| 7046374 | Interferometers for optical communications utilizing photo-sensitive materials An interferometer includes: a first glass plate optically coupled to a second glass plate, forming an optical interferometric cavity therebetween; a first reflective coating coupled to the first glass plate within the optical interferometric cavity, where the first ... | 05/16/2006 |
| 6922279 | Harmonic generation microscopy A harmonic generation microscopy employs a laser device that emits a laser beam having a predetermined wavelength that causes no autofluorescence in a biological sample and that, after excited, induces both the second and third harmonic waves. The laser beam is proj... | 07/26/2005 |
| 6845186 | Optical circuit with harmonic generator An optical circuit is designed with demultiplexing and optical detection functionality with minimal crosstalk. An Nth order harmonic generation device is positioned before the demultiplexer to either convert the frequency or down convert the wavelength of the demult... | 01/18/2005 |
| 6835944 | Low vapor pressure, low debris solid target for EUV production An EUV radiation source that creates a stable solid filament target. The source includes a nozzle assembly having a condenser chamber for cryogenically cooling a gaseous target material into a liquid state. The liquid target material is filtered by a filter and sent... | 12/28/2004 |
| 6485599 | Curing of sealants using multiple frequencies of radiation A system using several wavelengths, preferably from the output of a single laser, is described for curing a dual cure glue seal that affixes two substrates to form a liquid crystal display panel. Here the liquid crystal is already in place before the glue... | 11/26/2002 |
| 6323991 | Opto-electronic frequency divider circuit and method of operating same The circuit includes an electro-optical mixer, such as an electro-optical Mach-Zehnder modulator, with non-linear behavior. The modulator receives as input an optical signal (Pin) at the frequency to be divided, in addition to an electric signa... | 11/27/2001 |
| 6285487 | Light modulation system including a superconductive plate assembly for use in a data transmission scheme and method A method and apparatus for modulating light, wherein a light source provides light of a certain wavelength to be modulated by a layer of superconducting material which forms part of a specifically configured plate assembly. The superconducting layer is pl... | 09/04/2001 |
| 6204956 | Opto-electronic frequency divider circuit and method of operating same The circuit includes an electro-optical mixer, such as an electro-optical Mach-Zehnder modulator (2), with non-linear behaviour. The modulator (2) receives as input an optical signal (Pin) at the frequency to be divided, in addition to an elect... | 03/20/2001 |
| 6115170 | Light modulation system for use in a data transmission scheme and method A light modulation system, wherein a light source provides light of a certain wavelength to be modulated by a material layer, which forms part of a specifically configured plate assembly. The modulation layer is placed in the optical path of the light sou... | 09/05/2000 |
| 6108356 | Intracavity optical parametric oscillators According to the invention, a method and an apparatus for producing a laser beam having a preselected output frequency which has a longer wavelength than does the fundamental beam of the lasing medium is provided. In one aspect of the invention a laser re... | 08/22/2000 |
| 6086794 | Organic nonlinear optical material and nonlinear optical element using the same An organic nonlinear optical material comprising a compound having the iodonium salt structure represented by the general formula (I): ##STR1## wherein π1 to πn are the same or different and each is an atomic group having π e... | 07/11/2000 |
| 6033773 | Polar self-assembled thin films for non-linear optical materials The design and synthesis of a family of calix[4]arene-based nonlinear optical (NLO) chromophores are discussed. The calixarene chromophores are macrocyclic compounds consisting of four simple D-π-A units bridged by methylene groups. These molecules were ... | 03/07/2000 |
| 6033774 | Self-assembled superlattices and waveguides prepared for use therewith One manner of construction of robust, thin film materials with large second-order optical nonlinearities is the covalent self-assembly of aligned arrays of high-ଲ molecular chromophores into multilayer superlattices. the dispersion of the large seco... | 03/07/2000 |
| 5993701 | Third-order nonlinear optical material and method for production thereof A third-order nonlinear optical material having a metal oxide contained in a transparent polymer.... | 11/30/1999 |
| 5961890 | Third-order nonlinear optical material A third-order nonlinear optical material comprising a complex compound represented by the general formula: Ak Bl (LIGa)i (LIGb)j (1) wherein A represents one metallic element selected from the... | 10/05/1999 |
| 5886809 | Light modulation system including a superconductive plate assembly for use in a data transmission scheme and method A method and apparatus for modulating light, wherein a light source provides light of a certain wavelength to be modulated. A light modulating device is placed in the optical path of the light source. The resulting optical pulses transmitted through the l... | 03/23/1999 |
| 5828484 | Multiple-stage optical Kerr gate system A multiple-stage optical Kerr gate system for gating a probe pulse of light. In a first embodiment, the system includes at least two optical Kerr gates, each Kerr gate including a polarizer, an optical Kerr cell actuable by a pump pulse, and an analyzer. ... | 10/27/1998 |
| 5824240 | Nonlinear optical element and process for the preparation of same The present invention provides a nonlinear optical element having a sufficient thickness that can be used as a thin film insusceptible to crack and a process for the preparation thereof. A novel nonlinear optical element which gives a nonlinear response t... | 10/20/1998 |
| 5710658 | Achromatic phase-matching second harmonic generation for a tunable laser An optical system uses a nonlinear optical medium to alter the frequency of a relatively narrow band light source tunable over a plurality of different frequencies using an optical system for passively directing light to the nonlinear medium at a correct ... | 01/20/1998 |
| 5688442 | Nonlinear optical materials and process for producing the same There are provided a third-order nonlinear optical material comprising a film formed on the surface of a transparent substrate and consisting essentially of an oxide of a metal selected from the group consisting of V, Cr, Mn, Fe, Co, Ni and Cu; and a thir... | 11/18/1997 |
| 5532867 | Bias stabilization circuit and method for a linearized directional coupler modulator A circuit and method for actively stabilizing the DC bias voltages applied to passive sections of a linearized directional coupler modulator. A reference electrical signal is applied to the active section of a linearized directional coupler modulator, the... | 07/02/1996 |
| 5496503 | Third-order nonlinear optical main chain polymer material and method for preparing the same A third-order nonlinear optical main chain polymer material contains a high .chi..sup.(3) component having no less than 3 but no more than 7 π-conjugated bonding groups and having an electron donor in the main chain of the polymer through covalent bonds.... | 03/05/1996 |
| 5472777 | Nonlinear optical thin film A novel structure has, on a substrate a nonlinear optical thin film having a high .chi..sup.(3) value provided wherein metal fine particles are uniformly dispersed in a ferroelectric or highly dielectric matrix and heat treated whereby the metal fine part... | 12/05/1995 |
