Zobrazeno 1 - 10
of 56
pro vyhledávání: '"Yasuhiro, Miyasaka"'
Autor:
Satoshi Jinno, Masato Kanasaki, Takafumi Asai, Ryutaro Matsui, Alexander S. Pirozhkov, Koichi Ogura, Akito Sagisaka, Yasuhiro Miyasaka, Nobuhiko Nakanii, Masaki Kando, Nobuko Kitagawa, Kunihiro Morishima, Satoshi Kodaira, Yasuaki Kishimoto, Tomoya Yamauchi, Mitsuru Uesaka, Hiromitsu Kiriyama, Yuji Fukuda
Publikováno v:
Scientific Reports, Vol 12, Iss 1, Pp 1-9 (2022)
Abstract Multi-MeV high-purity proton acceleration by using a hydrogen cluster target irradiated with repetitive, relativistic intensity laser pulses has been demonstrated. Statistical analysis of hundreds of data sets highlights the existence of mar
Externí odkaz:
https://doaj.org/article/824468f50bcd4a16ab17c89b762bd14e
Autor:
Igor Yu. Skobelev, Sergey N. Ryazantsev, Roman K. Kulikov, Maksim V. Sedov, Evgeny D. Filippov, Sergey A. Pikuz, Takafumi Asai, Masato Kanasaki, Tomoya Yamauchi, Satoshi Jinno, Masato Ota, Syunsuke Egashira, Kentaro Sakai, Takumi Minami, Yuki Abe, Atsushi Tokiyasu, Hideki Kohri, Yasuhiro Kuramitsu, Youichi Sakawa, Yasuhiro Miyasaka, Kotaro Kondo, Akira Kon, Akito Sagisaka, Koichi Ogura, Alexander S. Pirozhkov, Masaki Kando, Hiromitsu Kiriyama, Tatiana A. Pikuz, Yuji Fukuda
Publikováno v:
Photonics, Vol 10, Iss 11, p 1250 (2023)
The generation of highly charged ions in laser plasmas is usually associated with collisional ionization processes that occur in electron–ion collisions. An alternative ionization channel caused by tunnel ionization in an optical field is also capa
Externí odkaz:
https://doaj.org/article/87d970d43b794b818e4610baef93d1c6
Autor:
Hiromitsu Kiriyama, Yasuhiro Miyasaka, Akira Kon, Mamiko Nishiuchi, Akito Sagisaka, Hajime Sasao, Alexander S. Pirozhkov, Yuji Fukuda, Koichi Ogura, Kotaro Kondo, Nobuhiko Nakanii, Yuji Mashiba, Nicholas P. Dover, Liu Chang, Masaki Kando, Stefan Bock, Tim Ziegler, Thomas Püschel, Hans-Peter Schlenvoigt, Karl Zeil, Ulrich Schramm
Publikováno v:
Photonics, Vol 10, Iss 9, p 997 (2023)
We described the output performance and temporal quality enhancement of the J-KAREN-P petawatt laser facility. After wavefront correction using a deformable mirror, focusing with an f/1.3 off-axis parabolic mirror delivered a peak intensity of 1022 W
Externí odkaz:
https://doaj.org/article/973800b507874d6c9ea54a9afb95fe9f
Publikováno v:
Crystals, Vol 10, Iss 9, p 831 (2020)
The importance of heat-resistant optics is increasing together with the average power of high-intensity lasers. A silicon carbide (SiC) ceramic with high thermal conductivity is proposed as an optics substrate to suppress thermal effects. The tempera
Externí odkaz:
https://doaj.org/article/2ca53099429c45c98e4ea1b3cc22391f
Autor:
Hiromitsu Kiriyama, Alexander S. Pirozhkov, Mamiko Nishiuchi, Yuji Fukuda, Akito Sagisaka, Akira Kon, Yasuhiro Miyasaka, Koichi Ogura, Nicholas P. Dover, Kotaro Kondo, Hironao Sakaki, James K. Koga, Timur Zh. Esirkepov, Kai Huang, Nobuhiko Nakanii, Masaki Kando, Kiminori Kondo, Stefan Bock, Tim Ziegler, Thomas Püschel, Karl Zeil, Ulrich Schramm
Publikováno v:
Crystals, Vol 10, Iss 9, p 783 (2020)
Ultra-high intensity femtosecond lasers have now become excellent scientific tools for the study of extreme material states in small-scale laboratory settings. The invention of chirped-pulse amplification (CPA) combined with titanium-doped sapphire (
Externí odkaz:
https://doaj.org/article/f290c12aa4ad41118d05d6dbfca0dcfc
Autor:
Miyasaka, Yasuhiro, Kondo, Kotaro, Kishimoto, Maki, Mori, Michiaki, Kando, Masaki, Kiriyama, Hiromitsu, Yasuhiro, Miyasaka, Kotaro, Kondo, Maki, Kishimoto, Michiaki, Mori, Masaki, Kando, Hiromitsu, Kiriyama
Publikováno v:
Optics express. 29(20):32404-32411
We developed an optically synchronized highly stable frequency-doubled Nd:YAG laser with sub-nanosecond pulse duration. The 1064 nm seed pulses generated by soliton self-frequency shift in a photonic crystal fiber from Ti:sapphire oscillator pulses w
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=jairo_______::f88e7b6e8f560e4f9c23652ea2cc5fc4
https://repo.qst.go.jp/records/84243
https://repo.qst.go.jp/records/84243
Autor:
Pikuz, Tatiana, Oks, Eugeny, Dalimier, Elisabeth, Matsui, Ryutaro, Ryazantsev, Sergey, Alkhimova, Maria, Skobelev, Igor, Pikuz, Sergey, Uehara, Naoki, Sakaguchi, Hiroshi, Fukami, Kazuhiro, Inoue, Shunsuke, Ota, Masato, Egashira, S., Nakagawa, Yoshiharu, Miyasaka, Yasuhiro, Koichi, Ogura, Akito, Sagisaka, Pirozhkov, Alexander, Masaki, Kando, Hiromitsu, Kiriyama, Kodama, Ryosuke, Yuji, Fukuda, Sakawa, Youichi, Kishimoto, Yasuaki, Yasuhiro, Miyasaka
The generation of ~0.9 GGauss B-field was observed in the near-solid density plasma created by high-contrast ultra-relativistic J-KAREN-P laser pulses with specially designed sub-micron Si-rods targets. The B-field was measured by means of x-ray spec
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=jairo_______::109750af48e1428f38d429fb4f40596d
https://repo.qst.go.jp/records/86047
https://repo.qst.go.jp/records/86047
Autor:
Kiriyama, Hiromitsu, Miyasaka, Yasuhiro, Sagisaka, Akito, Ogura, Koichi, Nishiuchi, Mamiko, Pirozhkov, Alexander, Fukuda, Yuuji, Kando, Masaki, Kondo, Kiminori, Hiromitsu, Kiriyama, Yasuhiro, Miyasaka, Akito, Sagisaka, Koichi, Ogura, Mamiko, Nishiuchi, Yuji, Fukuda, Masaki, Kando, Kiminori, Kondo
Publikováno v:
Optics Letters. 45(5):1100-1103
We experimentally explore the generation of pre-pulses by post-pulses, created through internal reflection in the optical components, by the non-linear process associated with the B-integral in the laser chain of the petawatt facility J-KAREN-P. At l
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=jairo_______::9a0ec0d8b776b454dc822b726657b7e6
https://repo.qst.go.jp/records/79030
https://repo.qst.go.jp/records/79030
Autor:
Hiromitsu Kiriyama, Yasuhiro Miyasaka, Akira Kon, Mamiko Nishiuchi, Akito Sagisaka, Hajime Sasao, Alexander S. Pirozhkov, Yuji Fukuda, Koichi Ogura, Kotaro Kondo, Nicholas P. Dover, Masaki Kando
Publikováno v:
Conference on Lasers and Electro-Optics.
We have realized the removal of most pre-pulses with wedged optics and orders of magnitude enhancement of the pedestal with higher optical quality optics. We have successfully installed the plasma mirror system for further improvement.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::caf2376c6d958be1b749ac632a3d3ff8
https://doi.org/10.1364/cleo_si.2022.sf3i.6
https://doi.org/10.1364/cleo_si.2022.sf3i.6
Autor:
Akira Kon, Mamiko Nishiuchi, Yuji Fukuda, Kotaro Kondo, Koichi Ogura, Akito Sagisaka, Yasuhiro Miyasaka, Nicholas P. Dover, Masaki Kando, Alexander S. Pirozhkov, Izuru Daito, Liu Chang, Il Woo Choi, Chang Hee Nam, Tim Ziegler, Hans-Peter Schlenvoigt, Karl Zeil, Ulrich Schramm, Hiromitsu Kiriyama
Publikováno v:
High Power Laser Science and Engineering 10(2022), e25
We report on the design and characterization of the plasma mirror system installed on the J-KAREN-P laser at the Kansai Photon Science Institute, National Institutes for Quantum Science and Technology. The reflectivity of the single plasma mirror sys
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::bbe55589bc90b46257216ad162600a0d
https://doi.org/10.1017/hpl.2022.15
https://doi.org/10.1017/hpl.2022.15