Multi-beam combining apparatus

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United States of America Patent

PATENT NO 9325149
APP PUB NO 20150138618A1
SERIAL NO

14368559

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Abstract

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A multi-beam combining apparatus includes a phase shifting section, a superposing section, an observing section and a phase control section. The phase shifting section generates a plurality of phase-shifted laser beams by shifting the phase of each of the plurality of laser beams. The superposing section generates a plurality of superposed laser beam by superposing the reference laser beam and each of the plurality of phase-shifted laser beams. The observing section generates interference pattern data of a spatial interference pattern which appears when observing each of the superposed laser beams. The phase control section carries out a feedback control of the phase shifts in the phase shifting section based on the interference pattern data obtained for every superposed laser beam, and thereby sets the plurality of phase-shifted laser beams to desired states.

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Patent Owner(s)

Patent OwnerAddress
MITSUBISHI HEAVY INDUSTRIES LTD2-3 MARUNOUCHI 3-CHOME CHIYODA-KU TOKYO 1008332 ?1008332
OSAKA UNIVERSITY1-1 YAMADAOKA SUITA-SHI OSAKA 5650871 ?5650871
INSTITUTE FOR LASER TECHNOLOGY1-8-4 UTSUBO-HONMACHI NISHI-KU OSAKA-SHI OSAKA 5500004 ?5500004

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Chosrowjan, Haik Osaka, JP 1 6
Fujita, Masayuki Osaka, JP 174 1511
Furuse, Hiroaki Osaka, JP 4 16
Hamamoto, Koichi Tokyo, JP 32 50
Izawa, Yasukazu Osaka, JP 7 61
Kawanaka, Junji Osaka, JP 4 19
Miyanaga, Noriaki Osaka, JP 10 43
Yamada, Takahiro Tokyo, JP 289 3040

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