Zobrazeno 1 - 10
of 30
pro vyhledávání: '"Masanao Kamata"'
Autor:
Jianglin Yue, Kenji Tanaka, Go Hirano, Gen Yonezawa, Misaki Shimizu, Yasunobu Iwakoshi, Hiroshi Tobita, Rintaro Koda, Yasutaka Higa, Hideki Watanabe, Katsunori Yanashima, Masanao Kamata
Publikováno v:
Nature Communications, Vol 13, Iss 1, Pp 1-9 (2022)
Here the authors demonstrate chip-scale high-peak-power lasers by vertical integration of semiconductor and solid state laser gain mediums to reach the same maturity level as existing semiconductor lasers, which are suitable for miniaturization and c
Externí odkaz:
https://doaj.org/article/3d686c52ade54305b2abae942293c8e5
Autor:
Kenji Tanaka, Jianglin Yue, Go Hirano, Gen Yonezawa, Misaki Shimizu, Yasunobu Iwakoshi, Hiroshi Tobita, Rintaro Koda, Yasutaka Higa, Hideki Watanabe, Masanao Kamata
Publikováno v:
Optica Advanced Photonics Congress 2022.
A chip-sized passively Q-switched laser is demonstrated, in which a solid-state gain medium is intra-cavity pumped and vertically integrated with a semiconductor laser. A laser chip volume of 1 mm3 and peak power of 50 kW are achieved simultaneously.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::fe8ac461c98e4bd889e64fd85c405d5e
https://doi.org/10.1364/assl.2022.am2a.1
https://doi.org/10.1364/assl.2022.am2a.1
Publikováno v:
Lasers Congress 2016 (ASSL, LSC, LAC).
We demonstrate 2.6 MW peak power at 1560 nm from Nd:YAG/Cr4+:YAG micro giant-pulse laser/amplifier with PPMgLN optical parametric generation. It is the first report of micro giant-pulse laser exceeding 2 MW peak power in eye-safe wavelength.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::1c6ecfa2c4d1fdc9f0b325e55763dc9c
https://doi.org/10.1364/assl.2016.ath4a.8
https://doi.org/10.1364/assl.2016.ath4a.8
Publikováno v:
Applied Physics A. 93:189-192
We propose an idea of fast cutting a display glass plate where the sample is pre-processed micromachining single shot rear-surface and internal void arrays aligned on working plane prior to glass cleaving. Single shot void morphology is investigated
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::cdec54314d512da41a2715e455ab5e2e
https://doi.org/10.1007/s00339-008-4672-2
https://doi.org/10.1007/s00339-008-4672-2
Autor:
Masanao Kamata, Eiji Toratani, Yasuo Ohtera, Shojiro Kawakami, Tsutomu Aoyama, Takashi Sato, Minoru Obara
Publikováno v:
Japanese Journal of Applied Physics. 45:2566-2571
A two-dimensional, autocloned, photonic crystal is used to control the pulse duration of a sub-picosecond Ti:sapphire laser for material processing applications. The photonic crystal consists of a periodic stack of 99.5-nm-thick Ta2O5 layers and 137.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::3a95bb5b030532fca1e3b8ff6a28638e
https://doi.org/10.1143/jjap.45.2566
https://doi.org/10.1143/jjap.45.2566
Publikováno v:
Microelectronic Engineering. 83:1782-1785
We demonstrate self-fabrication of a submicrometer-sized void array in fused silica using a 100fs 0.2-3@mJ Ti:Sapphire femtosecond laser and a high 0.9 numerical aperture (NA) objective lens. The effect of the focusing conditions of NA, laser energy,
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::fb8ab2e0b240d004580ec1d0b9f84aab
https://doi.org/10.1016/j.mee.2006.01.194
https://doi.org/10.1016/j.mee.2006.01.194
Publikováno v:
Applied Physics A. 79:1679-1685
We have developed an automatic pulsewidth-adjustable femtosecond Ti:Sapphire laser system that can generate an output of 50 fs-1 ps in duration, and sub-mJ/pulse at a repetition rate of 1 kpps. The automatic pulse compressor enables one to control th
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::84e7a57865d17c5997d769cbc2dc5d3a
https://doi.org/10.1007/s00339-004-2678-y
https://doi.org/10.1007/s00339-004-2678-y
Autor:
Masanao Kamata, Minoru Obara
Publikováno v:
Applied Physics A. 78:85-88
We demonstrate waveguide fabrication using of a loosely focused femtosecond laser that induces both nonlinear ionization and nonlinear propagation in silica glasses without any scanning process. The numerical aperture is chosen to be 0.007 to avoid s
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::31ecfb77f8d9c2ad5463ebb1edb2d03c
https://doi.org/10.1007/s00339-003-2158-9
https://doi.org/10.1007/s00339-003-2158-9
Publikováno v:
SPIE Proceedings.
A potential method for precise and fast dicing of display glass plates is proposed in this study. This technique facilitates the micromachining of cavities in both front and rear surfaces for a single pass of laser beam. The influences of focusing de
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::23f427028298be049fd3e7c17e1294ce
https://doi.org/10.1117/12.762807
https://doi.org/10.1117/12.762807
Autor:
Tomohiro Imahoko, Masanao Kamata, Tetsumi Sumiyoshi, Kazuya Takasago, Hitoshi Sekita, Susumu Tsujikawa
Publikováno v:
2007 Quantum Electronics and Laser Science Conference.
We solved the stability, life-time and cost problems of femtosecond lasers and opened the door to their huge commercial market in near future. Femtosecond lasers will be used in the semiconductor and LCD manufacturing factory.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b2c2708559fcaa37e8711de53015c611
https://doi.org/10.1109/qels.2007.4431528
https://doi.org/10.1109/qels.2007.4431528