Zobrazeno 1 - 10
of 35
pro vyhledávání: '"Shinichi Furuta"'
Autor:
Nanfang Yu, Shinichi Furuta, Romain Blanchard, Tadataka Edamura, Jonathan A. Fan, Qi Jie Wang, H. Kan, Laurent Diehl, Federico Capasso, Christian Pflügl, Masamichi Yamanishi
Publikováno v:
IEEE Transactions on Nanotechnology. 9:11-29
This paper reviews our recent work on laser beam shaping using plasmonics. We demonstrated that by integrating properly designed plasmonic structures onto the facet of semiconductor lasers, their divergence angle can be dramatically reduced by more t
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::435c5de132be7ca7a3d2b5bcc11e76d4
https://doi.org/10.1109/tnano.2009.2029099
https://doi.org/10.1109/tnano.2009.2029099
Autor:
Hideki Suzuki, Hirofumi Kan, Shinichi Furuta, Teruo Hiruma, Yujin Zheng, Hirofumi Miyajima, Takeshi Kanzaki, Hiroyasu Fujiwara, Nobuto Kageyama, Satoru Oishi, Kousuke Torii, Akiyoshi Watanabe, Takayuki Uchiyama, Masahiro Miyamoto
Publikováno v:
The Review of Laser Engineering. 36:268-272
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ef6bde28dab2ab634926038482e1a32b
https://doi.org/10.2184/lsj.36.268
https://doi.org/10.2184/lsj.36.268
Autor:
Toshiyuki Wakatsuki, Tomohiko Mannami, Shinichi Furutachi, Hiroki Numoto, Tsuyoshi Umekawa, Mayu Mitsumune, Tsukasa Sakaki, Hanako Nagahara, Yasushi Fukumoto, Takashi Yorifuji, Shin'ichi Shimizu
Publikováno v:
DEN Open, Vol 3, Iss 1, Pp n/a-n/a (2023)
Abstract Objectives The Glasgow‐Blatchford score (GBS) is a widely used risk assessment tool for patients with upper gastrointestinal bleeding. However, it only identifies a relatively low proportion of patients at low risk for adverse events and p
Externí odkaz:
https://doaj.org/article/02faed7a9b03458eab87f03ef6137943
Autor:
Shinichi Furuta, Teruo Hiruma, Hideki Suzuki, Hirofumi Miyajima, Takeshi Kanzaki, Takayuki Uchiyama, Satoru Oishi, Hirofumi Kan
Publikováno v:
The Review of Laser Engineering. 31:519-524
We have been developing high-power, high-efficiency laser diodes (LD) for pumping the structural figure fiber laser. Coexisting of a high beam quality and high power is demanded of the excitation of the fiber laser. For this purpose, we developed the
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e84771b44b05a2173d634625bca76d5a
https://doi.org/10.2184/lsj.31.519
https://doi.org/10.2184/lsj.31.519
Autor:
Hirofumi Kan, Hirofumi Miyajima, Akiyoshi Watanabe, Yujin Zheng, Akihiro Sone, Shinichi Furuta
Publikováno v:
The Review of Laser Engineering. 34:633-635
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f15538131aaa1751cb5f52fd92d9781d
https://doi.org/10.2184/lsj.34.633
https://doi.org/10.2184/lsj.34.633
Publikováno v:
Surface Science. 380:145-150
The influence of thickness distribution on spectroscopic ellipsometry (SE) of silicon on sapphire (SOS) was studied. The measured optical spectra (Ψ and Δ) of epitaxial Si and polycrystalline Si films were fitted with a multilayer structure, ambien
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::dc06ff84fd13c41706e977d499473ab6
https://doi.org/10.1016/s0039-6028(97)00016-2
https://doi.org/10.1016/s0039-6028(97)00016-2
Autor:
Shinichi Furuta, Tatsuo Dougakiuchi, Tadataka Edamura, Kazuue Fujita, Atsushi Sugiyama, Masamichi Yamanishi
Publikováno v:
SPIE Proceedings.
Quantum cascade (QC) lasers are promising light sources for many chemical sensing applications in the mid-infrared spectral range. For industrial applications, broadband wavelength tuning of external-cavity QC lasers with very broad gain-width has be
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::429c0af4fbbfa728ca78a2b8deebee7c
https://doi.org/10.1117/12.2003241
https://doi.org/10.1117/12.2003241
Autor:
Tadataka Edamura, Shinichi Furuta, Kazuue Fujita, Atsushi Sugiyama, Tatsuo Dougakiuchi, Masamichi Yamanishi
Publikováno v:
SPIE Proceedings.
A wide wavelength tuning of an external cavity quantum-cascade (QC) laser based on the anticrossed dual-upper-state to multiple-lower-state design is demonstrated in continuous wave (cw) operation at room temperature. The tuning ranges of 321 cm-1 (
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::7a1a6df719846e91142cd3142d707dca
https://doi.org/10.1117/12.907535
https://doi.org/10.1117/12.907535
Autor:
Tadataka Edamura, Kazuue Fujita, Masamichi Yamanishi, Shinichi Furuta, Tatsuo Dougakiuchi, Atsushi Sugiyama
Publikováno v:
Conference on Lasers and Electro-Optics 2012.
Intrinsic super-linear performance of quantum cascade lasers with dual-upper-state is reported. The super-linear slope efficiency, which is enhanced with increasing temperature, is ascribed to the absorption quenching due to the decrease of electron
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::2d893f32a6cf1f495c356953054495cb
https://doi.org/10.1364/cleo_at.2012.jw2a.86
https://doi.org/10.1364/cleo_at.2012.jw2a.86
Publikováno v:
Conference on Lasers and Electro-Optics 2012.
We present the operation of indirectly pumped InGaAs/InAlAs THz quantum-cascade lasers of which active/injector structures were grown by MOVPE. A laser exhibits a low threshold-current-density of ∼560 A/cm2 at 7 K and a T max ∼84 K.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::05536a43b9748bf7cffa58fba74c1c5c
https://doi.org/10.1364/cleo_si.2012.cth4n.5
https://doi.org/10.1364/cleo_si.2012.cth4n.5