Zobrazeno 1 - 10
of 14
pro vyhledávání: '"Yuji Ohkura"'
Publikováno v:
Journal of Crystal Growth. 297:44-51
Zinc (Zn) diffusion through MOCVD-fabricated InP and InGaAsP layers, and the corresponding Zn doping profile at the heterojunction interface were studied as part of the doping profile control for laser diodes. It was found that the Zn doping profile
Publikováno v:
Japanese Journal of Applied Physics. 42:2316-2319
Narrow stripe 780 nm window-mirror structure laser diodes (LDs) with and without a leakage current blocking structure in the window-mirror region were studied in terms of catastrophic optical degradation (COD) at facets. It was experimentally proved
Autor:
Motoharu Miyashita, Harumi Nishiguchi, Takeshi Nakayama, Yuji Ohkura, Akihiro Shima, Takashi Nishimura, Tadashi Takase, Yasuaki Yoshida
Publikováno v:
SPIE Proceedings.
A kink mechanism of a red (658nm) laser diode (LD) has been investigated in order to achieve a higher power operation of over 200mW. The experimental results indicate that a main origin of the kink generation is due to the deviation of the refractive
Autor:
Kazuo Mizuguchi, Yuji Ohkura, Mari Tsugami, A. Takemoto, T. Murotani, N. Yoshida, Tadashi Kimura
Publikováno v:
International Technical Digest on Electron Devices Meeting.
1.55- mu m band InGaAs-InGaAsP multiple-quantum-well distributed feedback laser diodes have been successfully fabricated by metalorganic chemical vapor deposition. The threshold current is as low as 9 mA, and the slope efficiency is 0.2 mW/mA. A very
Publikováno v:
Extended Abstracts of the 2002 International Conference on Solid State Devices and Materials.
Narrow stripe 780 nm window-mirror structure laser diodes (LDs) with and without a leakage current blocking structure in the window-mirror region were studied in terms of catastrophic optical degradation (COD) at facets. It was experimentally proved
Autor:
Koichi Fuse, Yoichi Hirokawa, Yuji Ohkura, Naohito Tanabe, Seiichi Miyajima, Masahiro Ito, Yuichi Nakamura, Kiminori Kato, Yoshimi Ohta, Makoto Kodama, Yusuke Ogawa, Ken Toba, Yoriko Kusano, Takafumi Nagatomo, Yoshifusa Aizawa, Satoru Hirono, Kenichi Watanabe
Publikováno v:
Annals of nuclear medicine. 13(1)
Although various noninvasive methods have been used to detect vasospasm, none of them are sensitive enough for patients with sporadic attacks. Since abnormal fatty acid metabolism is observed in ischemic myocardium, 123I-beta-methyl-p-iodophenyl pent
Autor:
Takafumi Nagamoto, Yusuke Ogawa, Go Hasegawa, Yoichi Hirokawa, Ken Toba, Makoto Kodama, Satoru Hirono, Naohito Tanabe, Seiichi Miyajima, Yoriko Kusano, Makoto Naito, Yoshifusa Aizawa, Ichiro Fuse, Kiminori Kato, Haruo Hanawa, Yoshimi Ohta, Yuichi Nakamura, Kenichi Watanabe, Yuji Ohkura
Publikováno v:
Annals of nuclear medicine. 12(5)
Long-chain fatty acids (LCFA) are one of the major cardiac energy substrates, so understanding LCFA metabolism may help in elucidating the mechanisms of various heart diseases. CD36 is a multifunctional membrane glycoprotein that acts not only as a r
Autor:
Yoshifusa Aizawa, Yusuke Ogawa, Yuji Ohkura, Ken Toba, Takafumi Nagatomo, Kenichi Watanabe, Haruo Hanawa, Ichiro Fuse, Satoru Hirono, Go Hasegawa, Makoto Naito, Yuichi Nakamura, Yoshinori Aoki, Seiichi Miyajima, Yoriko Kusano, Makoto Kodama
Publikováno v:
Japanese Circulation Journal. 62:541-542
CD36 is a multifunctional membrane-type receptor glycoprotein that reacts with oxidized low-density lipoprotein and long-chain fatty acid (LCFA). A patient presented with hereditary hypertrophic cardiomyopathy (HCM) and type I CD36 deficiency (neithe
Autor:
Yuji Ohkura
Publikováno v:
Nippon Shokuhin Kagaku Kogaku Kaishi. 52:505-505
Publikováno v:
Electronics Letters. 28:1844
A novel FS-BH laser structure using the selective growth characteristics of MOCVD on crystal facets has been developed. A threshold current as low as 12 mA and output power of 40 mW under CW operation have been achieved in the laser.