Zobrazeno 1 - 6
of 6
pro vyhledávání: '"Yutaka Ohki"'
Publikováno v:
High-Power Diode Laser Technology XVI.
We have fabricated a fiber coupled semiconductor laser diode module by means of spatial beam combining of single emitter broad area semiconductor laser diode chips in the 9xx nm band. In the spatial beam multiplexing method, the numerical aperture of
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::0ca48fb4e19d277527e7e795cb754ceb
https://doi.org/10.1117/12.2287307
https://doi.org/10.1117/12.2287307
Autor:
Ryuichiro Minato, Akihiko Kasukawa, Hidehiro Taniguchi, Hirotatsu Ishii, Yutaka Ohki, Takeshi Namegaya
Publikováno v:
IEEJ Transactions on Electronics, Information and Systems. 128:713-716
We have demonstrated high performance broad area single emitter lasers with window structure fabricated by newly developed impurity free vacancy disordering (IFVD) technique. Vacancies induce quantum well intermixing, leading to bandgap shift. We hav
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c465ca790e25b4d41b605a4565f267c9
https://doi.org/10.1541/ieejeiss.128.713
https://doi.org/10.1541/ieejeiss.128.713
Publikováno v:
Proceedings of SPIE; 10/17/2017, Vol. 10514, p1-6, 6p
Autor:
Yutaka Ohki, Naoki Tsukiji, S. Irino, Yoshida Jiyunji, H. Shimizu, Naoki Hayamizu, Shu Namiki
Publikováno v:
ResearcherID
We found that relative intensity noise of pump laser was increased after fiber transmission by mode partitioning noise and stimulated Brillouin scattering. Our novel innergrating-multimode laser can sufficiently suppress this increase of noise.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::9575d563d56a003cf335648c3fe7d6f0
https://doi.org/10.1364/oaa.2002.pd7
https://doi.org/10.1364/oaa.2002.pd7
Autor:
Toshio Kimura, Shu Namiki, Toru Fukushima, H. Shimizu, Naoki Hayamizu, Satoshi Irino, Yutaka Ohki, Yoshida Jiyunji, Naoki Tsukiji
Publikováno v:
Optical Amplifiers and Their Applications.
We demonstrated the advantage of inner-grating-multi-mode (iGM) lasers for suppressing Stimulated-Brillouin-scattering (SBS) in comparison with normal single-mode DFB lasers. We found that iGM laser with over 18 longitudinal-modes successfully reduce
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::8404b46293eaae7a6f141c0849dbf757
https://doi.org/10.1364/oaa.2002.omb4
https://doi.org/10.1364/oaa.2002.omb4
Conference
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