Zobrazeno 1 - 10
of 13
pro vyhledávání: '"Yuji Suzuki"'
Autor:
Hiroshi Takahashi, Makoto Yoshida, Shingo Ono, Masahiro Sakai, Yuji Suzuki, Toshiharu Sugiura, Tomoya Hirosumi, Nobuhiko Sarukura
Publikováno v:
Ultrafast Electronics and Optoelectronics.
Magnetic-field dependence of THz-radiation power from InAs with various surface orientations is investigated. Significant difference of the saturation peak is clearly observed for (111) surface, in comparison with (100) or (110) surfaces.
Publikováno v:
Ultrafast Electronics and Optoelectronics.
The mode-locking stability of a Kerr-lens mode-locked Ti:sapphire is investigated by a newly developed real-time spectrum analyzer, which can seamlessly acquire the time-domain signals and provide time-varying power spectrum.
Autor:
Makoto Yoshida, Masahiro Sakai, Nobuhiko Sarukura, Hiroshi Takahashi, Toshiharu Sugiura, Shingo Ono, Yuji Suzuki, Tomoya Hirosumi
Publikováno v:
Ultrafast Electronics and Optoelectronics.
Magnetic-field dependence of THz-radiation power from InSb (100) surface is investigated. Significant enhancement of THz-radiaiton power is successfully achieved by using a 1560 nm excitation and an external magnetic field.
Autor:
Toshimasa Kozeki, Yuji Suzuki, Shingo Ono, Eri Ishikawa, Hideyuki Ohtake, Toshihiro Yamase, Hidetoshi Murakami, Nobuhiko Sarukura
Publikováno v:
Advanced Solid-State Lasers.
Lacunary polyoxometalates, large inorganic, structure-design-flexible, nanocluster crystals are found to have higher optical nonlinearity than KDP by the powder SHG method. Moreover, the capability of generating ultraviolet radiation down to 300 nm i
Autor:
Tsuguo Fukuda, Hidetoshi Murakami, Shingo Ono, Susumu Machida, Yuji Suzuki, Kiyoshi Shimamura, Hiroki Sato, Hideyuki Ohtake, Nobuhiko Sarukura, Toshimasa Kozeki
Publikováno v:
Advanced Solid-State Lasers.
Coaxially-pumped large-aperture Ce3+:LiCaAlF6 power-amplifier module for the TW ultraviolet CPA laser system is demonstrated to have 98-mJ output with 25% extraction efficiency. Additionally newly-in vented homogeni zed- gain, side-pump, power-amplif
Autor:
Terunobu Nakajyo, Yasushi Aoki, Yuji Suzuki, Hideyuki Ohtake, Toshimasa Kozeki, Fumio Sakai, Nobuhiko Sarukura
Publikováno v:
Advanced Solid-State Lasers.
The electron-beam-pumped Ce3+:LiCaAIF6 ultraviolet laser medium is found to have longer fluorescence lifetime than those of the optically pumped medium, using a newly-developed, table-top-sized, low-jitter, 3-MeV picosecond electron-beam source with
Autor:
Ichiro Sekine, Hideyuki Ohtake, Hidetoshi Murakami, Hiroyuki Shiraishi, Nobuhiko Sarukura, Genta Masada, Toshimasa Kozeki, Yuji Suzuki, Shingo Ono
Publikováno v:
Advanced Solid-State Lasers.
Using large-sized Li2B4O7 crystals, 0.43-J, 266-nm pulses are obtained from a 10-Hz Nd: YAG laser with a total conversion efficiency of 30.5 %. Moreover, long-term stable, 4-W operation over 15 hour is demonstrated.
Autor:
A. Nakanishi, Makoto Yoshida, Yuji Suzuki, Shingo Ono, Hideyuki Ohtake, Nobuhiko Sarukura, Seiji Nishizawa, Takeyo Tsukamoto, Heirich Endert, Yusaburo Segawa, Michelle L. Stock
Publikováno v:
Ultrafast Electronics and Optoelectronics.
Thermal receiver detectable THz radiation is generated from an InAs irradiated with 1.04-µm, 80-fs, 180-mW fiber laser in a 2-T field by a compact permanent magnet. The THz radiation is monitored by a room-temperature-operating thermal receiver (Deu
Autor:
Yuji Suzuki, Tsuguo Fukuda, Toshimasa Kozeki, Zhenlin Liu, Masahiro Hirano, Nobuhiko Sarukura, Kiyoshi Shimamura, Hideo Hosono
Publikováno v:
Advanced Solid-State Lasers.
New UV tunable amplification medium crystal Ce3+:LiSr0.8Ca0.2AlF6 grown as a broad gain spectrum over 15-nm is observed by newly invented two-crystal pump and probe scheme. The preliminary laser operation of the Ce:LiSCAF crystal is also confirmed.
Autor:
Yuji Suzuki, Hideyuki Ohtake, Hidetoshi Murakami, Nobuhiko Sarukura, Zhenlin Liu, Toshimasa Kozeki
Publikováno v:
Advanced Solid-State Lasers.
Novel confocal double-pass, Ti:sapphire cw-amplifier with the 4.2 times small-signal gain and 10.6 % extraction efficiency is demonstrated to deliver 5.77-W average-power, 82-MHz repetition-rate, femtosecond pulses. Furthermore, the scalability and c