Zobrazeno 1 - 10
of 15
pro vyhledávání: '"Akira Sakamoto"'
Publikováno v:
High-Power Diode Laser Technology XV.
High-brightness and high-efficiency fiber-coupled pump module has been developed with newly designed laser diodes and improved spatial optical system. High-power operation was realized by widening laser stripe width. The optical system of the module
Autor:
Akira Sakamoto, Shinichi Sakamoto, Daiichiro Tanaka, Yohei Kasai, Yukihiko Takahashi, Ken Katagiri, Yuji Yamagata
Publikováno v:
SPIE Proceedings.
High-brightness laser diode module over 300 W with 100 μm core/NA 0.22 fiber has been developed by integrating the several tens of optimally designed single emitter laser diodes in a newly designed package. We employed the Asymmetric Decoupled Confi
Autor:
Masayuki Yamaguchi, Ryozaburo Nogawa, Yuji Yamagata, Akira Sakamoto, Yumi Yamada, Syunta Sato, Masanori Muto
Publikováno v:
High-Power Diode Laser Technology and Applications XIII.
915nm high-power and high-reliability single emitter laser diodes based on Asymmetric Decoupled Confinement Heterostructure (ADCH) are demonstrated. Advantage of ADCH is that it can optimize active layer confinement () and confinement ratio of p-
Publikováno v:
SPIE Proceedings.
High power laser diode developed for fiber laser pumping is evaluated as a light source for an optical power supply unit. The output power of the newly developed laser diode module exceeds 15 W with 105 μm core fiber. It is estimated that more than
Publikováno v:
Molecular Crystals and Liquid Crystals Science and Technology. Section A. Molecular Crystals and Liquid Crystals. 316:359-362
Techniques for determing the critical devices parameters of side polished fiber devices are discussed and illustrated.
Development and Improvement of Portable Raman Imaging Spectrometers for Studying Cultural Properties
Autor:
Akira Sakamoto, Shukichi Ochiai, Hisamitsu Higashiyama, Koji Masutani, Jun-ichi Kimura, Emi Koseto-Horyu, Mitsuo Tasumi, P. M. Champion, L. D. Ziegler
Publikováno v:
AIP Conference Proceedings.
Autor:
H. Otoma, Hideo Nakayama, Y. Miyamoto, Nakamura Takeshi, Akira Sakamoto, M. Fuse, M. Yoshikawa, Jun Sakurai, Nobuaki Ueki
Publikováno v:
IEEE Photonics Technology Letters. 11:1539-1541
The authors have fabricated oxide-confined vertical-cavity surface-emitting lasers with metal apertures exhibiting a spatial mode filtering effect. Single-mode continuous-wave output is enhanced up to 3.4 mW by this effect for AlGaAs-based 780-nm ver
Autor:
Yukari Motosugi, Naoki Morita, Manabu Numata, Akira Sakamoto, Yasuhiro Ogasawara, Mami Hatanaka
Publikováno v:
Journal of Imaging Science and Technology. 59:20501-1
Autor:
Hideo Nakayama, Nobuaki Ueki, Akemi Murakami, S. Omori, Naotaka Mukoyama, Y. Kuwata, Hiromi Otoma, Takashi Kondo, Nakamura Takeshi, Akira Sakamoto
Publikováno v:
2006 1st Electronic Systemintegration Technology Conference.
The 850nm single-mode oxide-confined VCSEL with a metal aperture as a spatial mode filter is reported. The OPTALO (optical probing technique for AlAs lateral oxidation) process was adopted to manufacture a small oxide aperture in VCSEL with high repr
Publikováno v:
Optical Fiber Sensors.
An inexpensive and high-accuracy optical sensing method utilizing an angled three-fiber-array is proposed and demonstrated. By combination of the temperature and pressure sensors, we achieved a temperature compensated pressure sensor with accuracy of