Zobrazeno 1 - 10
of 136
pro vyhledávání: '"James Koga"'
Autor:
Petr Valenta, Timur Zh. Esirkepov, James Koga, Georg Korn, Masaki Kando, Tae Moon Jeong, Alexander S. Pirozhkov, Stepan Bulanov, Sergei V. Bulanov
Publikováno v:
Physical Review A, vol 104, iss 5
The question of electromagnetic field intensification towards the values typical for strong field Quantum Electrodynamics is of fundamental importance. One of the most promising intensification schemes is based on the relativistic-flying mirror conce
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::30415af8dba2f4a2b2f34aa303b85333
Autor:
Mamiko Nishiuchi, Tomas Mocek, Masaki Kando, Antonio Lucianetti, Sergei V. Bulanov, Hideyuki Kotaki, M. Kanasaki, Koichi Ogura, David Vojna, Venkatesan Jambunathan, Timur Zh. Esirkepov, Kiminori Kondo, Magdalena Sawicka-Chyla, Hironao Sakaki, Michiaki Mori, Ondrej Slezak, Alexander S. Pirozhkov, Akito Sagisaka, Hiromitsu Kiriyama, Akira Kon, Yuji Fukuda, Yukio Hayashi, James Koga, Paul R. Bolton
Publikováno v:
IEEE Journal of Selected Topics in Quantum Electronics. 21:232-249
A high-contrast high-intensity petawatt-class Ti:sapphire chirped-pulse amplification laser has been developed for research on high field science. A saturable absorber and a low-gain optical parametric chirped-pulse amplification preamplifier in the
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f287a3db5a039205eff9e5b4dce263bf
https://doi.org/10.1109/jstqe.2014.2336774
https://doi.org/10.1109/jstqe.2014.2336774
Autor:
Yoshiaki Kato, K. Ogura, Noboru Hasegawa, E. N. Ragozin, Masaharu Nishikino, David Neely, Alexander S. Pirozhkov, Tatiana Pikuz, Kiminori Kondo, Masaki Kando, T. Zh. Esirkepov, Sergei V. Bulanov, Hiroyuki Daido, A. Sagisaka, Yuji Fukuda, Takashi Imazono, Tetsuya Kawachi, James Koga, Paul R. Bolton, Yukio Hayashi, Hideyuki Kotaki, A. Ya. Faenov, Hiromitsu Kiriyama
Publikováno v:
Scientific Reports, Vol 7, Iss 1, Pp 1-10 (2017)
Scientific Reports
Scientific Reports
In various media the elementary components can emit traveling waves such as electromagnetic, gravitational or acoustic types. If these elementary emitters are synchronized, the resulting emission is coherent. Moreover, the faster the emitters approac
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::1f58850dd2e6c27a64aacdef866945f3
http://arxiv.org/abs/1611.05547
http://arxiv.org/abs/1611.05547
Autor:
Koichi Ogura, Maki Kishimoto, Makoto Asakawa, Mamiko Nishiuchi, Kiminori Kondo, Yukio Hayashi, Masato Kanasaki, Kentaro Sekiguchi, Hideyuki Kotaki, Masaki Kando, Sergei V. Bulanov, Yasuhiro Miyasaka, Hirotaka Tanaka, Timur Zh. Esirekepov, Alexander S. Pirozhkov, Akito Sagisaka, Michiaki Mori, Yuji Mashiba, Yuji Fukuda, Hironao Sakaki, James Koga, Hiromitsu Kiriyama, Akira Kon
Publikováno v:
Scopus-Elsevier
We report recent advances on the J-KAREN laser upgrade to provide an intensity capacity surpassing 1022 W/cm2 at 0.1 Hz. Currently, the high-spatiotemporal quality broadband pulses are amplified to over 55 J at 0.1 Hz.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f1e802f3bd6c7f59eb66624dcb244ffc
https://doi.org/10.1364/cleo_si.2016.sm1m.5
https://doi.org/10.1364/cleo_si.2016.sm1m.5
Autor:
Georgy Klushin, Sergei V. Bulanov, Yukio Hayashi, Tatiana Pikuz, James Koga, Tatsufumi Nakamura, Hideyuki Kotaki, S. A. Pikuz, Masaki Kando, Yuji Fukuda, Timur Zh. Esirkepov, Alexander S. Pirozhkov, Artem Astapov, Yoshiaki Kato, Nikolai Nagorskiy, Anatoly Ya. Faenov, S.A. Magnitskiy
Publikováno v:
physica status solidi c. 9:2331-2335
The spectrum variation and the coherent properties of the high-order harmonics (HOH) generated by an oscillating electron spikes formed at the joint of the boundaries of a cavity and a bow wave, which are created by a relativistically self-focusing l
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::2d96e0b146d17cf99d0d224e42db2464
https://doi.org/10.1002/pssc.201200390
https://doi.org/10.1002/pssc.201200390
Autor:
Hideyuki Kotaki, Hironao Sakaki, Ryosuke Kodama, Sergei Pikuz, Alexander S. Pirozhkov, Tatiana Pikuz, James Koga, Elisabeth Dalimier, Kiminori Kondo, Igor Yu. Skobelev, A. Faenov, Alexander Andreev, Yuji Fukuda, Tetsuya Kawachi, Eugene Oks, Yukio Hayashi, Alexei Zhidkov, Masaki Kando
Publikováno v:
Optics Express
Optics Express, 2015, 23 (25), pp.31991-32005. ⟨10.1364/OE.23.031991⟩
Optics Express, Optical Society of America-OSA Publishing, 2015, 23 (25), pp.31991-32005. ⟨10.1364/OE.23.031991⟩
Optics Express, 2015, 23 (25), pp.31991-32005. ⟨10.1364/OE.23.031991⟩
Optics Express, Optical Society of America-OSA Publishing, 2015, 23 (25), pp.31991-32005. ⟨10.1364/OE.23.031991⟩
International audience; We present experiments dealing with a femtosecond laser-driven cluster-based plasma, where by analyzing the nonlinear phenomenon of satellites of spectral lines of Ar XVII, we revealed the nonlinear phenomenon of the generatio
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::4e549440382b49437b0a596c53fb2f33
https://pubmed.ncbi.nlm.nih.gov/26698990
https://pubmed.ncbi.nlm.nih.gov/26698990
Autor:
T. A. Pikuz, Toshiki Tajima, F. F. Kamenets, Masaki Kando, Tetsuya Kawachi, A. Y. Faenov, E. N. Ragozin, Michiyasu Mori, Koichi Ogura, Jinglong Ma, Toyoaki Kimura, Sv Bulanov, Liming Chen, Akito Sagisaka, Yuji Fukuda, Izuru Daito, Akira Sugiyama, Keigo Kawase, Takashi Kameshima, Yukio Hayashi, K. Belyaev, T. Zh. Esirkepov, Hiroyuki Daido, James Koga, Hajime Okada, Alexander S. Pirozhkov, Yoshiaki Kato, Hideyuki Kotaki, Hiromitsu Kiriyama
Publikováno v:
The European Physical Journal D. 55:465-474
We present the results of experiments on the generation of both high and low frequency electromagnetic radiation from the nonlinear interaction of intense laser beams with underdense plasmas. High frequency radiation is generated as a result of the r
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::78be32f39967f13593ce3bce685805e7
https://doi.org/10.1140/epjd/e2009-00246-x
https://doi.org/10.1140/epjd/e2009-00246-x
Autor:
Sergei V. Bulanov, J. F. Hua, Toshiki Tajima, Yuchi Wu, Yuqiu Gu, Liming Chen, Hideyuki Kotaki, K. Sugiyama, H. S. Peng, Takashi Kameshima, Wei Hong, James Koga, Xianlun Wen, K. Nakajima, C. M. Tang, Shin-ichi Kurokawa
Publikováno v:
IEEE Transactions on Plasma Science. 36:1734-1737
Experiments for the laser guiding studies has been carried out with the 30-fs 100-TW Ti:sapphire laser pulse interaction with the underdense plasma produced by a long-slab (1.2 times 10 mm2) gas jet and an ablative laser-triggered discharged capillar
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::98216f1405417991a5f6f0197fd53d96
https://doi.org/10.1109/tps.2008.927149
https://doi.org/10.1109/tps.2008.927149
Autor:
Izuru Daito, Yuji Fukuda, K. Nakajima, Hideyuki Kotaki, Alexander S. Pirozhkov, S. V. Bulanov, Liming-M Chen, Masaki Kando, Hiroyuki Daido, Jinglong Ma, Yukio Hayashi, T. Zh. Esirkepov, James Koga, T. Homma
Publikováno v:
IEEE Transactions on Plasma Science. 36:1760-1764
We demonstrate a highly reproducible acceleration of a high-quality electron bunch injected into the laser wake field accelerator with the help of a countercrossing laser pulse. In our experiments, the wake field is generated by a subrelativistic las
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::825ef91cd9ea7ec66e8361888cac9281
https://doi.org/10.1109/tps.2008.927944
https://doi.org/10.1109/tps.2008.927944
Autor:
T. Homma, E. Yu. Echkina, Hiromitsu Kiriyama, Yuji Fukuda, I. N. Inovenkov, Koichi Yamakawa, Masaki Kando, Sergei V. Bulanov, N. Inoue, S. Masuda, Michiaki Mori, Shuhei Kanazawa, Yutaka Akahane, Shuji Kondo, Atsushi Yamazaki, Hideyuki Kotaki, Makoto Aoyama, James Koga, Yukio Hayashi
Publikováno v:
Physics Letters A. 363:130-135
Using a cluster jet containing Ar clusters, collimated relativistic electrons up to 58 MeV with an electron charge of 2.1 nC were generated by a laser–cluster interaction. The resulting spectrum does not fit a Maxwellian distribution, but is well d
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::1d150c458d6e617c2ff05338d3cfe93e
https://doi.org/10.1016/j.physleta.2006.12.061
https://doi.org/10.1016/j.physleta.2006.12.061