Hamamatsu-photonics K.k.

Toyota Jidosha Kabushiki Kaisha

Takashi Sekine

Toshiyuki Kawashima

Yoshinori Kato

Takashi Kurita

Yoneyoshi Kitagawa

Yoshitaka Mori

Takaaki Morita

Yasuki Takeuchi

Hirofumi Kan

Naoki Nakamura

Osamu Komeda

Hirozumi Azuma

Nakahiro Satoh

Katsuhiro Ishii

Yasuhiko Nishimura

Yoshinori Tamaoki

Ryohei Hanayama

Yuma Hatano

Koichi Iyama

Tomoyoshi Motohiro

Tatsumi Hioki

Yujin Zheng

Norio Kurita

Kazuhisa Fujita

Shinichiro Okihara

Kenichi Ueda

Yuki Kabeya

Atsushi Sunahara

Mitsutaka Kakeno

Takuto Iguchi

Yasushi Miyamoto

Yuki Muramatsu

An external resonator-type semiconductor laser deviceA includes an external resonator formed of one or a plurality of laser diode light sources and a VBG; an optical fiber which outputs output light La from the laser diode light source toward the VBG, and into which return light Lb from the VBG is input; and a displacement unit that displaces a disposition position of the VBG with respect to an input and output end surface of the optical fiber.

External resonator-type semiconductor laser device

A laser device includes a first laser medium and a second laser medium that have a first surface and a second surface opposite to the first surface, and receive input of excitation light and seed light from the first surface side to amplify the seed light, a holder that holds the first laser medium and the second laser medium; and a pair of cooling units that cool the first laser medium and the second laser medium according to change in volume of a refrigerant.

Laser device

A laser medium unit includes: a plate-shaped laser gain medium which includes a first surface and a second surface opposite to the first surface and generates emission light by the irradiation of excitation light from the first surface; a reflection member that is provided on the second surface so as to reflect the excitation light and the emission light; and a cooling member that cools the laser gain medium. The laser gain medium includes an irradiation area which is irradiated with the excitation light and an outer area which is located outside the irradiation area when viewed from a thickness direction intersecting the first surface and the second surface. The cooling member is thermally connected to the second surface through the reflection member so that a cooling area of the laser gain medium is formed on the second surface.

Laser medium unit and laser device

A laser device includes a laser medium for amplifying seed light, a first optical system for outputting excitation light for exciting the laser medium and causing the excitation light to be incident on the laser medium and input to an excitation region of the laser medium, and a second optical system for causing the seed light of first polarization to be incident on the laser medium at an incidence angle larger than 0&#xb0; with respect to the laser medium and input to the excitation region.

The laser amplification apparatus is provided with a plurality of plate-shaped laser medium components (Mto M) which are disposed to be aligned along a thickness direction, and prisms (Pto P) which optically couples the laser medium components. Each of the laser medium components is provided with a main surface to which a seed light is incident, and a side surface which surrounds the main surface. An excitation light is incident from at least one side surface of a specific laser medium component among the plurality of laser medium components. The excitation light is incident through the prism to a side surface of the laser medium component adjacent to the prism.

Laser amplification apparatus, laser apparatus, and laser nuclear fusion reactor

A plate-like laser medium has a through-hole for providing a flow of a cooling medium. The laser medium unit includes the plurality of laser media. A laser beam amplification device includes a laser medium unit, an excitation light sourcethat causes excitation light to enter the laser medium unit, a through-holeof a window member as a unit for supplying the cooling medium in a through-holeof the laser medium, and a cooling medium flow path Farranged around the laser medium unit

Laser medium, laser medium unit, and laser beam amplification device

The device has a target supply unitfor supplying a targetto a chamber, a target monitorfor monitoring the targetpresent inside the chamber, a laser light irradiatorfor irradiating the targetpresent inside the chamber, with laser light, and a controller. The target supply unitemits the targetat a timing for emitting, that is controlled by the controller, into a preset emission directioninside the chamber, and the controllercalculates an irradiation pointwith the laser light, calculates a timing for arriving of the targetat the irradiation point, and makes the laser light irradiatorirradiate the target with the laser light, based on the irradiation pointand the timing for arriving.

Device for quantum beam generation, method for quantum beam generation, and device for laser fusion

Provided is a laser device including N semiconductor laser array stacks, a prismatic optical system that shifts optical axes of luminous fluxes respectively output from the N semiconductor laser array stacks so as to decrease intervals among the luminous fluxes, and an imaging optical system that causes the luminous fluxes to be condensed and deflected for each luminous flux. The imaging optical system causes the luminous fluxes to be deflected so that the luminous fluxes overlap each other at a predetermined position and generates a light-condensing point of the luminous fluxes between the imaging optical system and the predetermined position.

Laser device having semiconductor laser array stacks

A laser medium unitin a laser beam amplification device includes a plurality of laser media. A cooling medium flow path Fis provided around the laser medium unitto cool the laser medium unitfrom outside. A sealed space between the laser mediais filled with gas or liquid, and a laser beam for passing through the sealed space is not interfered by a cooling medium flowing outside. Therefore, a fluctuation of an amplified laser beam is prevented, and a quality such as stability and focusing characteristics of the laser beam is improved.

Laser beam amplification device

A target shell monitoring devicethat monitors an attitude and a position of the target shell Tg, a compression laser output devicethat irradiates the target shell Tgwith a compression laser light LS, and a heating laser output devicethat irradiates the target shell Tgwith a heating laser light LSfollowing the compression laser light LSare provided. The target shell Tghas a hollow spherical shell shape, includes an approximately spherical space Sp on an inner side thereof, includes at least one through hole Hconnecting an outer side thereof and the space Sp, and includes, on an outer surface Sfthereof, irradiation areas Arand Arto be irradiated with compression laser lights.

Laser fusion device and nuclear fusion generating method

An object is to be capable of inducing a nuclear fusion reaction at a relatively high efficiency and downsize a device. A nuclear fusion deviceof the present invention includes a nuclear fusion targetincluding a target substratecontaining deuterium or tritium and a thin-film layercontaining deuterium or tritium stacked on the target substrate, a vacuum containerfor storing the nuclear fusion target, and a laser unitfor irradiating two successive first and second pulsed laser lights P, Ptoward the thin-film layerof the nuclear fusion target, and the intensity of the first pulsed laser light Pis set to a value that is smaller than that of the second pulsed laser light Pand allows peeling of the thin-film layerfrom the target substrate

Neutron generation target, device, and method

Growing community of inventors

Hamamatsu, Japan

Takashi Sekine