Canon Kabushiki Kaisha

Panasonic Corporation

Osaka University

Sumitomo Osaka Cement Co., Ltd.

Yasuyuki Ozeki

Kazuyoshi Itoh

Norihiko Nishizawa

Kiichi Fukui

Shinichiro Kajiyama

Fumihiro Dake

Yuma Kitagawa

Kazuhiko Sumimura

Michihiro Yamagata

Yasuhiro Tanaka

Satoshi Oikawa

Junichiro Ichikawa

Kazuhiro Yamada

Hiroshi Murata

Wataru Umemura

Keisuke Nose

The measurement apparatus combines first and second lights from first and second light generators to focus the combined light to a sample, and detect the first or second light intensity-modulated by stimulated Raman scattering. The first light generator includes a light dispersion element separating the light from a light introducing optical system in different directions according to light frequencies, and drives at least one of the light dispersion element and part of the light introducing optical system so as to change an incident angle of the light to the light dispersion element to extract part of the separated light, thereby making a light frequency of the first light variable. The second light generator produces a plurality of the second lights having mutually different light frequencies. The apparatus measures a Raman spectrum by changing the light frequency of the first light.

Stimulated raman scattering measurement apparatus

An optical microscope that can prevent an increase in the complexity of the light source system is equipped with optics readily capable of adequate operation even when the modulation frequency is increased to reduce the impact of the intensity noise of the laser. The optical microscope irradiates a sample with a first train of optical pulses having a first optical frequency, which is generated by a first light source, and a second train of optical pulses having a second optical frequency, which is temporally synchronized with the first train of optical pulses and is generated by a second light source, and detects light scattered from the sample. A first repetition frequency of the first train of optical pulses is an integral sub-multiple of a second repetition frequency of the second train of optical pulses.

Optical microscope and optical instrumentation

The stimulated Raman scattering detection apparatus includes first and second light pulse generators () respectively generating first and second light pulses with first and second pulse periods, an optical system combining the first and second light pulses and focusing the combined light pulses onto a sample, and a detector () detecting the second light pulses intensity-modulated by stimulated Raman scattering generated by focusing of the combined light pulses onto the sample. The second light pulse generator divides each raw light pulse emitted with the second pulse period into two light pulses, delays one of the two light pulse with respect to the other thereof and combines the one light pulse divided from one raw light pulse and delayed, with the other light pulse divided from another raw light pulse emitted after the one raw light pulse, to generate the second light pulse.

Stimulated raman scattering detection apparatus

The present invention provides a method for narrowing a spectral width that can also be adapted to an ultrashort optical pulse emitted from a wavelength tunable light source, and that can provide an output optical pulse with a narrow spectral width and a low noise component, and an optical element and a light source device that use the method for narrowing a spectral width. The method includes using an optical waveguide member () to cause a soliton effect in an input optical pulse () within the optical waveguide member (), thereby narrowing a spectral width of the input optical pulse () to provide an output optical pulse (), the optical waveguide member () having dispersion characteristics such that the average of a second-order dispersion value (&#x3b2;) with respect to the input optical pulse () is negative, and the absolute value of the second-order dispersion value (&#x3b2;) increases in a propagation direction of the input optical pulse ().

Spectral width narrowing method, optical element and light source device

A solid-state image pickup device capable of taking more light into light receiving regions is provided. The solid-state image pickup device of the present invention includes: a photoelectric conversion unit having a plurality of light receiving regions that are two-dimensionally arrayed, the photoelectric conversion unit for photoelectrically converting light incident on each of the light receiving regions, and outputting an electric signal according to the intensity of the incident light; a lens unit comprising a plurality of converging lenses provided on an upper layer of the photoelectric conversion unit, each of the converging lens being provided corresponding to a set of continuous first to third light receiving regions; and a dispersing element provided between the photoelectric conversion unit and the lens unit, the dispersing element being formed of a medium whose refractive index varies periodically, and diffracting beams of a first wavelength band and of a third wavelength band, having been transmitted through the converging lens, and directing the beams onto the first light receiving region and the third light receiving region, and transmitting, without diffracting, a beam of a second wavelength band, having been transmitted through the converging lens, and directing the beam onto the second light receiving region.

Solid-state image pickup device, imaging device, and dispersing element

An optical modulator includes: a substrate made of a material having an electro-optical effect; an optical waveguide formed on the substrate; and a modulation electrode for modulating an optical wave propagating through the optical waveguide, wherein emitted light emitted from the optical waveguide is guided by optical fiber, and polarization of the substrate is reversed in a predetermined pattern along the optical waveguide so as to provide waveform distortion having a characteristic opposite to a wavelength dispersion characteristic of the optical fiber.

Optical modulator

The invention provides an optical microscope that prevents an increase in the complexity of the light source system and is equipped with optics readily capable of adequate operation even when the modulation frequency is increased in order to reduce the impact of the intensity noise of the laser, etc. This optical microscopeirradiates a samplewith a first train of optical pulses having a first optical frequency, which is generated by a first light source, and a second train of optical pulses having a second optical frequency, which is temporally synchronized with the first train of optical pulses and is generated by a second light source, and detects light scattered from the sample. The repetition frequency of the train of optical pulses generated by the first light source is an integral sub-multiple of the repetition frequency of the train of optical pulses generated by the second light source.

Growing community of inventors

Osaka, Japan

Yasuyuki Ozeki