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Michiharu Yamamoto, Carlsbad US

Michiharu Yamamoto, Carlsbad, CA US

Patent application numberDescriptionPublished
20090052009NON-LINEAR OPTICAL DEVICE SENSITIVE TO GREEN LASER - A non-linear optical device comprising a polymer configured to be photorefractive upon irradiation by a green laser. The polymer comprises a repeating unit including a moiety selected from the group consisting of the structures (M-1), (M-2) and (M-3), as defined herein.02-26-2009
20090197186OPTICAL DEVICES RESPONSIVE TO BLUE LASER AND METHOD OF MODULATING LIGHT - An optical device comprising a photorefractive composition configured to be photorefractive upon irradiation by a blue laser. The photorefractive composition comprises a polymer comprising a repeating unit including at least a moiety selected from the group consisting of the formulas (Ia), (Ib) and (Ic), as defined herein.08-06-2009
20090246716HIGH REFRACTIVE INDEX SOL-GEL COMPOSITION AND METHOD OF MAKING PHOTO-PATTERNED STRUCTURES ON A SUBSTRATE - Described herein are sol-gel compositions, sol-gel composition precursors, and methods of fabricating photo-patterned structures on a substrate. The sol-gel compositions possess a combination of high refractive index and low optical loss, even without incorporating metal oxides or metal alkoxides. The sol-gel compositions are further useful in waveguide fabrication applications, especially at the telecommunication wavelength range of 1300-1600 nm. Furthermore, the fabrication of patterned structures using the sol-gel compositions described herein can be achieved in a variety of substrates, including, for example, silicon-on-silica substrates and molybdenum-on-glass substrates.10-01-2009
20100060975SYSTEMS AND METHODS FOR IMPROVING THE PERFORMANCE OF A PHOTOREFRACTIVE DEVICE - A photorefractive device (03-11-2010
20100096603OPTICAL DEVICES RESPONSIVE TO NEAR INFRARED LASER AND METHODS OF MODULATING LIGHT - A photorefractive composition that is photorefractive upon irradiation by a near infrared (NIR) laser. The photorefractive composition comprises a sensitizer and a polymer comprising a repeating unit including at least a moiety selected from the group consisting of the formulae (Ia), (Ib) and (Ic), as defined herein. The photorefractive composition can be used in optical devices.04-22-2010
20100099789METHOD FOR MODULATING LIGHT OF PHOTOREFRACTIVE COMPOSITION - A method for forming a grating in a photorefractive composition comprising the steps of: providing a photorefractive composition containing a sensitizer and a polymer, wherein the polymer includes a first repeating unit which includes a moiety selected from the group consisting of the formulae (Ia), (Ib) and (Ic) as defined herein; and irradiating the photorefractive composition with a near infrared (NIR) laser, wherein the composition provides long grating holding time and the grating signal can be read out without external bias voltage.04-22-2010
20100152338NONLINEAR OPTICAL MATERIAL COMPOSITION AND METHOD OF MANUFACTURE - Embodiments of the present disclosure provide non-linear optical compounds and compositions comprising a silole-derivative. In an embodiment, the silole derivative comprises a chromophore including a structure represented by Formula (A): wherein each Of R06-17-2010
20110013124LYOTROPIC CHROMOPHORIC COMPOUNDS, LIQUID CRYSTAL SYSTEMS AND OPTICALLY ANISOTROPIC FILMS - Lyotropic chromophoric compounds comprised of a naphthalimide derivative, a perylene-3,4-dicarboxylic imide derivative, or a perylenetetracarboxylic diimide derivative are described. The compounds can be used to form liquid crystal systems possessing high quality optical properties. The resulting liquid crystal systems are readily applied onto a substrate to obtain optically isotropic or anisotropic, at least partially crystalline films applicable in various fields.01-20-2011

Patent applications by Michiharu Yamamoto, Carlsbad, CA US