Zobrazeno 1 - 10
of 15
pro vyhledávání: '"Hideyuki Naito"'
Autor:
Kousuke Torii, Nobuto Kageyama, Akira Higuchi, Junya Maeda, Harumasa Yoshida, Takenori Morita, Masahiro Miyamoto, Hiroki Aoshima, Yuta Aoki, Hideyuki Naito, Takehito Nagakura
Publikováno v:
IEEE Journal of Quantum Electronics. 50:510-514
We have demonstrated a high-power 980-nm vertical-cavity surface-emitting laser diode (VCSEL) array with ion-implanted current apertures. The device was characterized on an exclusively developed water-cooled heat sink for the VCSEL array. A peak outp
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::fdce2256ee76828e190757b74f569f28
https://doi.org/10.1109/jqe.2014.2323055
https://doi.org/10.1109/jqe.2014.2323055
Autor:
Junya Maeda, Hiroki Aoshima, Takehito Nagakura, Kousuke Torii, Harumasa Yoshida, Motoki Takauji, Takenori Morita, Hideyuki Naito
Publikováno v:
IEEE Photonics Technology Letters. 27:1660-1662
We report on the long-term reliable continuous wave (CW) operation of high-power and high-efficiency 915-nm broad-area laser diodes (BA-LDs). An output power of over 20 W and a maximum power-conversion efficiency of over 65% have been marked at a hea
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::18ff8ad60df098b7d9a016dceab5af4a
https://doi.org/10.1109/lpt.2015.2433927
https://doi.org/10.1109/lpt.2015.2433927
Autor:
Takenori Morita, Yuta Aoki, Hirofumi Miyajima, Takehito Nagakura, Akira Higuchi, Masahiro Miyamoto, Harumasa Yoshida, Hideyuki Naito, Kousuke Torii, Junya Maeda
Publikováno v:
SPIE Proceedings.
Vertical-Cavity Surface-Emitting Lasers (VCSELs) are very attractive to high power light sources owing to the advantageous configuration of two-dimensional arrays and being free from catastrophic optical damage. Although oxideconfined VCSELs have bee
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d619f3f0b7e14921a303b76183164954
https://doi.org/10.1117/12.2001589
https://doi.org/10.1117/12.2001589
Autor:
Junya Maeda, Yuta Aoki, Takenori Morita, Hirofumi Miyajima, Takehito Nagakura, Hideyuki Naito, Kousuke Torii, Akira Higuchi, Harumasa Yoshida, Masahiro Miyamoto
Publikováno v:
SPIE Newsroom.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::45fcc75c989f876ccb8b37cfdb4e2dc5
https://doi.org/10.1117/2.1201302.004722
https://doi.org/10.1117/2.1201302.004722
Autor:
Shunkichi Isobe, Shingo Ohmori, Naokazu Hamamoto, Fumio Kawamata, Hideyuki Naito, Mitsuo Isogai, Makoto Takeuchi
Publikováno v:
Electronics and Communications in Japan (Part I: Communications). 79:102-116
It is expected that the demand for personal satellite communications will increase and systems providing various services enabling direct communications between automobiles and portable stations will be in demand in the near future. Load transponders
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::271d3299965bf156472f3a31ec81597b
https://doi.org/10.1002/ecja.4410790311
https://doi.org/10.1002/ecja.4410790311
Autor:
Takenori Morita, Hirofumi Miyajima, Hideyuki Naito, Kousuke Torii, Junya Maeda, Akira Higuchi, Harumasa Yoshida, Masahiro Miyamoto
Publikováno v:
Optics express. 20(4)
We report on GaAs-based high power density vertical-cavity surface-emitting laser diodes (VCSELs) with ion implanted isolated current apertures. A continuous-wave output power of over 380 mW and the power density of 4.9 kW/cm2 have been achieved at 1
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e978962c5f9e55188f3555a0bf02629d
https://pubmed.ncbi.nlm.nih.gov/22418178
https://pubmed.ncbi.nlm.nih.gov/22418178
Autor:
Nobuto Kageyama, Kousuke Torii, Junya Maeda, Hiroki Aoshima, Hideyuki Naito, Takenori Morita, Yuta Aoki, Takehito Nagakura, Akira Higuchi, Harumasa Yoshida, Masahiro Miyamoto
Publikováno v:
Applied Optics. 54:4589
For large-area ion-implanted vertical-cavity surface-emitting lasers (VCSELs), side emission from the edges of a chip disturbs the laser emission of a VCSEL mode, and suppression of it is fundamental. In this paper, we present results of a numerical
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::be8bb69c38af023f29cd69982a0a0feb
https://doi.org/10.1364/ao.54.004589
https://doi.org/10.1364/ao.54.004589
Publikováno v:
Chemical and Pharmaceutical Bulletin. 54:717-718
Two new isocoumarins, angelicoins A and B, were isolated from the roots of Pleurospermum angelicoides, and their structures were established by spectral means.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::659893c7babb477384a8387ea491eef6
https://doi.org/10.1248/cpb.54.717
https://doi.org/10.1248/cpb.54.717
Autor:
Yuta Aoki, Takehito Nagakura, Hideyuki Naito, Junya Maeda, Hirofumi Miyajima, Kousuke Torii, Masahiro Miyamoto, Takenori Morita, Akira Higuchi, Harumasa Yoshida
Publikováno v:
Applied Physics Express. 5:082104
We report on a GaAs-based high-power-density vertical-cavity surface-emitting laser diode (VCSEL) array with ion-implanted isolated current apertures. A peak output power of 40.6 W has been achieved from the VCSEL array with seven emitters under 100-
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e47e347839b984bdc7d43edeffbedb70
https://doi.org/10.1143/apex.5.082104
https://doi.org/10.1143/apex.5.082104
Autor:
Akira Higuchi, Hideyuki Naito, Kousuke Torii, Masahiro Miyamoto, Takenori Morita, Junya Maeda, Hirofumi Miyajima, Harumasa Yoshida
Publikováno v:
Optics Express. 20:6203
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::00ada09e64dea289202d3e2ed23d3581
https://doi.org/10.1364/oe.20.006203
https://doi.org/10.1364/oe.20.006203