Zobrazeno 1 - 10
of 42
pro vyhledávání: '"Sadao Uemura"'
Publikováno v:
Optics Communications. 281:5389-5392
We have demonstrated and analyzed a high-power high-efficiency high-beam-quality continuous-wave (cw) Yb:YAG laser, which is directly pumped into the upper lasing level by a fiber-coupled laser diode with a center wavelength of 969 nm. To achieve hig
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b02939f23edea2c2af6f8374b2903ea1
https://doi.org/10.1016/j.optcom.2008.07.057
https://doi.org/10.1016/j.optcom.2008.07.057
Publikováno v:
The Review of Laser Engineering. 36:1069-1072
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::6eb49749b58ee3f32a6acf94206668c3
https://doi.org/10.2184/lsj.36.1069
https://doi.org/10.2184/lsj.36.1069
Autor:
Sadao Uemura, Kenji Torizuka
Publikováno v:
Japanese Journal of Applied Physics. 45:L846-L848
We have developed a continuous-wave diode-pumped Yb:YAG laser with high beam quality applying only a highly doped Yb:YAG crystal that is pumped directly into the upper lasing level. The laser produces a practically diffraction-limited Gaussian beam,
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::8d70449631bf2beaaac56f93734fc956
https://doi.org/10.1143/jjap.45.l846
https://doi.org/10.1143/jjap.45.l846
Autor:
O. Kazharsky, M. Kitano, H. Ogura, H. Takigawa, Y. Nishikawa, T. Kanzaki, H. Miyajima, M. Miyamoto, Y. Itoh, K. Matsui, T. Morita, H. Kan, T. Hiruma, M. Yamanaka, N. Srinivasan, H. Kiriyama, T. Yoshida, T. Ichii, H. Matsui, Y. Izawa, S. Nakai, H. Furukawa, C. Yamanaka, T. Yamanaka, Song Jie, Kazunori Okino, Anping Liu, Kenichi Ueda, Kouki Shimizu, Shunichi Sato, T. Kyoto, T. Kamiya, M. Takahashi, K. Ochi, K. Yoshida, S. Kaku, T. KASAMATSU, H. SEKITA, A. TADA, T. SUMIYOSHI, T. TOMITAKA, K. Utoh, A. Nakanishi, Y. Kono, F. Kannari, K. Yamakawa, M. Aoyama, T. Itoh, T. Matoba, H. Takuma, H. Kitaura, K. Taniguchi, N. Nishi, E. Ohmura, I. Miyamoto, T. Satake, T. Uchimura, T. Watanabe, M. Nakajima, T. Yagi, K. Horioka, Tatsuya Shinozaki, Akira Suda, Tomohiro Ishida, Keigo Nagasaka, Hideo Tashiro, S. Nasu, K. Nishiwaki, S. Ishida, A. Koshino, R. Yamamoto, T. Tanifuji, Y. Morimoto, T. Igarasi, H. Takesita, H. Naramoto, N. Kamisugi, Y. Ihara, N. Kuzuu, Utako Tanaka, Kensuke Matsubara, Ryuzo Ohmukai, Kazuhiro Hayasaka, Hidetsuka Imajo, Masayoshi Watanabe, Shinji Urabe, Yoshinari SUZUKI, Hiroki YOSHIDA, Yukio SAKAGAMI, M. Tsunekane, N. Taguchi, H. Inaba, Y. Nagumo, Sadao Uemura, Kenzo Miyazaki
Publikováno v:
The Review of Laser Engineering. 25:33-38,43
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::685316dfcbfc006c265b448054bccd6f
https://doi.org/10.2184/lsj.25.supplement_33
https://doi.org/10.2184/lsj.25.supplement_33
Autor:
Sadao Uemura, Kenzo Miyazaki
Publikováno v:
Optics Communications. 133:201-204
We report the characteristics of a self-mode-locked Cr.LiSAF solitary laser which is operated at reduced group-delay dispersion (GDD). The mode-locked laser produces 37-fs pulses with the spectral width of 41 nm. The spectral change with increasing p
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::913b72cd2acdc68b7a094c9067458a9c
https://doi.org/10.1016/s0030-4018(96)00412-9
https://doi.org/10.1016/s0030-4018(96)00412-9
Autor:
Kenji Torizuka, Sadao Uemura
Publikováno v:
2013 Conference on Lasers and Electro-Optics Pacific Rim (CLEOPR).
We developed a diode-pumped Yb:YAG chirped-pulse oscillator with a positive intracavity group delay dispersion (GDD). To enlarge the cavity length of the laser, we employed a different type of multiple-pass cavity with a single hole that makes the al
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a5d754724a9f687c38b6fa98f50febff
https://doi.org/10.1109/cleopr.2013.6600465
https://doi.org/10.1109/cleopr.2013.6600465
Autor:
Koichi Shimoda, Fumiyoshi Kuwashima, Iwao Kitazima, Hiroshi Iwasawa, T. Nakata, M. Takeoka, A. Uchida, F. Kannari, Satoshi Wada, Xia Xiao-Wei, Kazuyuki Akagawa, Hideo Tashiro, Xiao-wei XIA, Sadao Uemura, Kenzou Miyazaki, K. Takasago, M. Takekawa, M. Hase, S. Nakashima, M. Tani, K. Sakai, W. Odajima, Y. Sasaki, H. Nishioka, K. Ueda, Shin-ichi NAKAMURA, Nobuaki NAKASHIMA, Yasukazu IZAWA, Yasushi HAMANAKA, Chiyoe YAMANAKA, Shuji SAKABE, Nobuo ISHIHARA
Publikováno v:
The Review of Laser Engineering. 24:3-8,13
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::3b601bad549e154c0456ddc91aef40b8
https://doi.org/10.2184/lsj.24.supplement_3
https://doi.org/10.2184/lsj.24.supplement_3
Autor:
Kenji Torizuka, Sadao Uemura
Publikováno v:
Lasers, Sources, and Related Photonic Devices.
We have succeeded in Kerr-lens modelocking of a Yb:YAG laser pumped with a single-emitter laser-diode chip, which enables us to obtain an inexpensive femtosecond-pulse laser source.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::eec2d6a9dce410ddb05f26a7fa87c229
https://doi.org/10.1364/assp.2012.aw4a.24
https://doi.org/10.1364/assp.2012.aw4a.24
Autor:
Kenji Torizuka, Sadao Uemura
Publikováno v:
Lasers, Sources and Related Photonic Devices.
We report a diode-pumped Yb:YAG chirped-pulse oscillator that delivers a total pulse energy of 2.1 μJ, and analyze the temporal and spectral profiles of the laser pulse using a chip parameter C, which is calculated as C = 1.50. The group-delay dispe
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::22cf0509fe1e1fb052a1e7a841dcb5ae
https://doi.org/10.1364/assp.2010.awb25
https://doi.org/10.1364/assp.2010.awb25
Publikováno v:
Optics Communications. 92:225-228
Picosecond real-time recording and reading of spatially parallel optical data was demonstrated. The technique is based on the time and space holography in media which exhibit persistent hole burning at low temperatures. Picosecond temporal profiles o
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::47666dba1120713f58558d16caff2d74
https://doi.org/10.1016/0030-4018(92)90626-3
https://doi.org/10.1016/0030-4018(92)90626-3