Yutaka Akahane
Japan Atomic Energy Agency
83 Papers
361 Citations
Yutaka Akahane is an academic researcher from Japan Atomic Energy Agency. The author has contributed to research in topics: Laser & Chirped pulse amplification. The author has an hindex of 17, co-authored 82 publications. Previous affiliations of Yutaka Akahane include Japan Atomic Energy Research Institute.
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Papers
100-TW sub-20-fs Ti:sapphire laser system operating at a 10-Hz repetition rate.
TL;DR: A compact three-stage Ti:sapphire amplifier laser system that produced peak power in excess of 100 TW for a pulse duration of less than 19 fs and an average power of 19 W at a 10-Hz repetition rate is developed.
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Many-electron dynamics of a Xe atom in strong and superstrong laser fields.
TL;DR: Investigation of ionization dynamics of a Xe atom exposed to intense 800-nm pulses of 20-fs duration in the extensive intensity range from 10(13)-10(18) W/cm(2) proves suppression of nonsequential ionization towards higher intensity and few optical cycle regimes.
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High-energy, diode-pumped, picosecond Yb:YAG chirped-pulse regenerative amplifier for pumping optical parametric chirped-pulse amplification
Yutaka Akahane,Makoto Aoyama,Kanade Ogawa,K. Tsuji,Shigeki Tokita,Junji Kawanaka,Hajime Nishioka,Koichi Yamakawa +7 more
TL;DR: A diode-pumped, cryogenic-cooled Yb:YAG regenerative amplifier utilizing gain-narrowing has been developed and second-harmonics of the amplified pulse was used to pump picosecond two-color optical parametric amplification.
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Time-dependent Boltzmann kinetic model of x rays produced by ultrashort-pulse laser irradiation of argon clusters
Joseph Abdallah,George Csanak,Yuji Fukuda,Yutaka Akahane,Makoto Aoyama,N. Inoue,H. Ueda,Koichi Yamakawa,A. Ya. Faenov,A. I. Magunov,T. A. Pikuz,I. Yu. Skobelev +11 more
TL;DR: In this article, the Boltzmann equation and a detailed collisional-radiative model are solved simultaneously as a function of time to model the time-integrated x-ray spectra of the transient plasma produced by a high intensity ultrafast laser source.
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Ultrarelativistic electron generation during the intense, ultrashort laser pulse interaction with clusters
Yuji Fukuda,Yutaka Akahane,Makoto Aoyama,Yukio Hayashi,T. Homma,N. Inoue,Masaki Kando,Shuhei Kanazawa,Hiromitsu Kiriyama,Shuji Kondo,Hideyuki Kotaki,S. Masuda,Michiaki Mori,Atsushi Yamazaki,Koichi Yamakawa,E. Yu. Echkina,I. N. Inovenkov,James Koga,Sergei V. Bulanov +18 more
TL;DR: In this paper, the authors used a cluster jet containing Ar clusters to generate relativistic electrons up to 58 MeV with an electron charge of 2.1 nC, which is well described by a two-temperature Maxwellian.
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