Hirofumi Namizaki
Mitsubishi
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Featured researches published by Hirofumi Namizaki.
international electron devices meeting | 1983
Ryoichi Hirano; Etsuji Oomura; Hideyo Higuchi; Y. Sakakibara; Hirofumi Namizaki; W. Susaki; K. Fujikawa
The main purpose of this study is to realize a highly reliable InP/InGaAsP lasers even at elevated temperatures. We present and demonstrate a new BC structure (displaced BC, D-BC) with optimized device parameters such as the dimensions of the active region and the doping levels of the constituent layers. A stable long life operation for more than 4,000 hours in automatic power control (APC) mode operation at a temperature of 80° C is obtained in these new lasers. The life time of the lasers are estimated to be8 \times 10^{4}hours( ≃ 9 years).
Archive | 1974
Hirofumi Namizaki; Hirofumi Kan
Archive | 1975
Hirofumi Namizaki; Akiko Ito
Archive | 1978
W. Susaki; Hirofumi Namizaki
Archive | 1989
E. Omura; Hirofumi Namizaki
Archive | 1985
Hirofumi Namizaki; Y. Sakakibara
Archive | 1985
Y. Sakakibara; Hirofumi Namizaki; Etsuji Oomura; Hideyo Higuchi
Archive | 1983
Hirofumi Namizaki; Ryoichi Hirano; Hideyo Higuchi; Etsuji Oomura; Y. Sakakibara; W. Susaki
Clinical Nutrition Supplements | 2003
Hirofumi Namizaki; Kimikazu Hazumi; Hiroaki Morikawa; Mitsunori Nakatani; Keisuke Namba
IS&T/SPIE's Symposium on Electronic Imaging: Science and Technology | 1993
Takashi Sugawara; Kazuhiro Kobayashi; Hiroyuki Murai; Christiaan Baert; Takao Sakamoto; Hidetada Tokioka; Yuichi Masutani; Hirofumi Namizaki; Masahiro Nunoshita
