パワーレーザーの新パラダイム創成を目指した時空間分割受動コヒーレント結合法の確立

• Project/Area Number: 21K18149
• Research Category: Grant-in-Aid for Challenging Research (Pioneering)
• Allocation Type: Multi-year Fund
• Review Section: Medium-sized Section 14:Plasma science and related fields
• Research Institution: National Institutes for Quantum Science and Technology
• Principal Investigator: 桐山 博光 国立研究開発法人量子科学技術研究開発機構, 関西光量子科学研究所 光量子ビーム科学研究部, グループリーダー (40354972)
• Co-Investigator(Kenkyū-buntansha): 戸田 裕之 同志社大学, 理工学部, 教授 (00202200) ; 宮坂 泰弘 国立研究開発法人量子科学技術研究開発機構, 関西光科学研究所 光量子科学研究部, 主任研究員 (20761464) ; 鈴木 将之 同志社大学, 理工学部, 教授 (60622371)
• Project Period (FY): 2021-07-09 – 2026-03-31
• Project Status: Granted (Fiscal Year 2024)
• Budget Amount: ¥25,480,000 (Direct Cost: ¥19,600,000、Indirect Cost: ¥5,880,000); Fiscal Year 2024: ¥9,360,000 (Direct Cost: ¥7,200,000、Indirect Cost: ¥2,160,000); Fiscal Year 2023: ¥7,670,000 (Direct Cost: ¥5,900,000、Indirect Cost: ¥1,770,000); Fiscal Year 2022: ¥3,250,000 (Direct Cost: ¥2,500,000、Indirect Cost: ¥750,000); Fiscal Year 2021: ¥5,200,000 (Direct Cost: ¥4,000,000、Indirect Cost: ¥1,200,000)
• Keywords: レーザー

Outline of Research at the Start

これまで各研究機関においてコヒーレントビーム結合が研究されてきたが、これを実現するのは簡単ではない。多数の増幅ビームを結合する手法が検討されてきたが、各ビーム光路を能動的に超精密に合わせたとしても、各ビーム波面は同じにならない。そのため、波面合成後にも時間空間強度変調の影響は残留し、ビーム結合効率の大きな低下をもたらす。この問題を解決するため、本研究では各ビームの波面、即ち位相が受動的に一致するコヒーレント結合系を開発する。

Outline of Annual Research Achievements

コヒーレント光であるレーザーの最大の特徴は、パワースケーリングは原理上無限にできることである。光を電界位相まで揃えたコヒーレント結合ができるため、独立の増幅器から出たレーザーを結合できるからである。2018年ノーベル物理学賞を受賞したチャープパルス増幅（CPA）法で可能となったペタワット(PW=10の15乗W)よりも3桁高いエキサワット(EW=10の18乗W)レーザーを実現できる基盤技術を確立するため、ハイパワーレーザーのコヒーレント結合技術を開発
する。最も困難な課題は空間波面の整合性であり、時間領域の周波数や位相をいくら整合させても結合はうまくいかない。本研究では、技術的に未開拓な独立の固体レーザー増幅器から出た全てのレーザーが全て同じ光路を伝搬することで受動的に波面が一致する新たなアイデアに挑む。
本年度(R6)は計画していた時間空間分割極短パルスレーザーの高エネルギー増幅とそれらの受動コヒーレント結合として、１）ストレッチャーの試作・試験、２）高エネルギー増幅のための励起レーザーの整備を行なった。ビームの形やパルスの幅が変わらないように、エネルギーを調整できる機構を付加するとともに、ビームが崩れて光学部品に損傷が起こらないように真空ガラス管を用いた像転送光学系を設計・整備した。
新たに構築した本光学系においても、３次元波動光学解析によりフェムト秒極短パルスを制御することなく位相ずれゼロで受動結合（自動空間波面整合）できる調整手法を確立するとともに、理論限界の伝搬効率で良好な再結合シングルビーム出力を確認できた。
また、像転送光学系を組み込んだ高エネルギー増幅器を試作・試験し必要な増幅利得を理論限界の効率で達成した。

Current Status of Research Progress

2: Research has progressed on the whole more than it was originally planned.

Reason

当該年度の予定は、時間空間分割レーザーの増幅とそれらの受動コヒーレント結合の実証として、システム分散量の詳細調査とパルス圧縮器の試作試験を終え、これまでの試験結果のフィードバックによるシステムの最適化を行うことである。
このため、すべての透過する媒質の材料、及び厚みを調査し、システムの分散領を定量的に把握を行うとともに、パルス圧縮器の試験・試作を終え、再圧縮をを予定通り実施できた。また、上記を受けて、高エネルギー増幅に着手することができた。

Strategy for Future Research Activity

時空間分割高エネルギー・フェムト秒極短パルスレーザーの受動コヒーレント結合特性の検証として、大口径の増幅器を付加し、パルス圧縮器を試作することで、現状の先端レベルよりも2-3桁高い出力であるテラワット(TW=10^12 W)ピークパワーの実証と特性評価を行う予定である。

Research Products

• [Journal Article] Optimization of laser-driven quantum beam generation and the applications with artificial intelligence (2024)
  • Author(s): Kuramitsu Y.、Taguchi T.、Nikaido F.、Minami T.、Hihara T.、Suzuki S.、Oda K.、Kuramoto K.、Yasui T.、Abe Y.、Ibano K.、Takabe H.、Chu C. M.、Wu K. T.、Woon W. Y.、Chen S. H.、Jao C. S.、Chen Y. C.、Liu Y. L.、Morace A. et al.
  • Journal Title: Physics of Plasmas Volume: 31 Issue: 5 Pages: 053108-053108
  • DOI: 10.1063/5.0190062
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Metrology for sub-Rayleigh-length target positioning in ~10^22 W/cm^2 laser-plasma experiments (2024)
  • Author(s): Vishnyakov,Sagisaka,Ogura,Esirkepov,Gonzalez,Armstrong,Pikuz,Pikuz,Yan,Jeong,Singh,Hadjisolomou,Finke,Grittani,Nevrkla,Lazzarini,Velyhan,Hayakawa,Fukuda,Koga,Ishino,Kondo,Miyasaka,Kon,Nishikino,Nosach,Khikhlukha,Tsygvintsev,Kumar,Nejdl,Margarone,Sasorov,Weber,Kando,Kiriyama,Kato,Korn,Kondo,Bulanov,Kawachi,Pirozhkov
  • Journal Title: High Power Laser Science and Engineering Volume: - Pages: 1-58
  • DOI: 10.1017/hpl.2024.11
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] A hybrid simulation integrating molecular dynamics and particle-in-cell methods for improved laser-target interaction (2024)
  • Author(s): Kumar Harihara Sudhan、Takahashi Masayuki、Kuramitsu Yasuhiro、Minami Takumi、Kiriyama Hiromitsu、Fukuda Yuji、Ohnishi Naofumi
  • Journal Title: High Energy Density Physics Volume: 53 Pages: 101148-101148
  • DOI: 10.1016/j.hedp.2024.101148
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Ultrarelativistic Fe plasma with GJ/cm3 energy density created by femtosecond laser pulses (2024)
  • Author(s): Alkhimova Mariya、Skobelev Igor、Pikuz Tatiana、Ryazantsev Sergey、Sakaki Hironao、Pirozhkov Alexander S.、Esirkepov Timur Zh.、Sagisaka Akito、Dover Nicholas P.、Kondo Kotaro、Ogura Koichi、Fukuda Yuji、Kiriyama Hiromitsu、Nishitani Keita、Pikuz Sergey、Kando Masaki、Kodama Ryosuke、Kondo Kiminori、Nishiuchi Mamiko
  • Journal Title: Matter and Radiation at Extremes Volume: 9 Issue: 6 Pages: 067205-067205
  • DOI: 10.1063/5.0212545
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] In-vacuum post-compression of optical probe pulse for relativistic plasma diagnostics (2024)
  • Author(s): S Lorenz S. Lorenz, G. Grittan, K. Kondo, A. Kon, Y.-K. Liu, A. Sagisaka, K. Ogura, N. Nakanii, K. Huang, A. Bierwage, S. Nanba, H. Ohiro, T. A. Pikuz, J. K. Koga, P. Chen, H. Kiriyama, M. Kando, T. Zh. Esirkepov, S. V. Bulanov, and A. S. Pirozhkov
  • Journal Title: High Power Laser Science and Engineering Volume: －
  • DOI: 10.1017/hpl.2024.29
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] 3D track extraction from a fluorescent nuclear track detector via machine learning and an application to diagnostics of laser-driven ions (2024)
  • Author(s): Nikaido F.、Abe Y.、Minami T.、Kuramoto K.、Yasui T.、Sakai K.、Kanasaki M.、Fukuda Y.、Kiriyama H.、Jao C. S.、Chu C. M.、Wu K. T.、Woon W. Y.、Liu Y. L.、Pikuz T.、Hamaguchi S.、Saura N.、Benkadda S.、Kusumoto T.、Kodaira S.、Kuramitsu Y.
  • Journal Title: Review of Scientific Instruments Volume: 95 Issue: 10 Pages: 103302-103302
  • DOI: 10.1063/5.0219480
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Evolution of a laser wake cavity in a MCF plasma (2024)
  • Author(s): Bierwage Andreas、Esirkepov Timur Zh.、Koga James K.、Pirozhkov Alexander S.、Aiba Nobuyuki、Huang Kai、Kando Masaki、Kiriyama Hiromitsu、Matsuyama Akinobu、Shinohara Kouji、Yagi Masatoshi、Yun Gunsu S.
  • Journal Title: Scientific Reports Volume: 14 Issue: 1 Pages: 27853-27853
  • DOI: 10.1038/s41598-024-77739-2
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] 光同期光パラメトリックチャープパルス増幅法励起のための高安定サブナノ秒Nd:YAGレーザー (2024)
  • Author(s): 宮坂 泰弘, 近藤 康太郎, 森 道昭，神門 正城，桐山 博光
  • Journal Title: レーザー研究 Volume: 52 Pages: 79-83
• [Journal Article] Fundamentals of High-Power Lasers (2023)
  • Author(s): 桐山博光
  • Journal Title: Journal of the Particle Accelerator Society of Japan Volume: 19 Issue: 4 Pages: 177-186
  • DOI: 10.50868/pasj.19.4_177
  • ISSN: 1349-3833, 2436-1488
  • Year and Date: 2023-01-31
  • Peer Reviewed / Open Access
• [Journal Article] 飛躍的に発展を続けるレーザー (2023)
  • Author(s): 桐山 博光, 栗田 隆史, 吉田 実, 横谷 篤至
  • Journal Title: レーザー研究 Volume: 51 Pages: 342-346
  • Peer Reviewed
• [Journal Article] Laser output performance and temporal quality enhancement at the J-KAREN-P petawatt laser facility (2023)
  • Author(s): H. Kiriyama, Y. Miyasaka, A. Kon, M. Nishiuchi, A. Sagisaka, H. Sasao, A. S. Pirozhkov, Y. Fukuda, K. Ogura, K. Kondo, N. Nakanii, Y. Mashiba, N. P. Dover, L. Chang, M. Kando, S. Bock, T. Ziegler, T. Puschel, H.-P. Schlenvoigt, K. Zeil, and U. Schramm
  • Journal Title: Photonics Volume: 10 Issue: 9 Pages: 997-997
  • DOI: 10.3390/photonics10090997
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Development of an X-ray diagnostic method for high-density plasmas for optimizing laser-driven heavy ion accelerators (2023)
  • Author(s): C. Liu, K. Kondo, A. Kon, H. Sakaki, T. Miyatake, I. Takemoto, H. Matsumoto, H. Kiriyama, M. Kando, M. Hata, N. Xu, G. Casati, N. Dover, Z. Najmudin, T. Ziegler, M. Pinochet, V. Milenko, K. Zeil, U. Schramm, N. Iwata, Y. Sentoku, M. Nishiuchi
  • Journal Title: レーザー研究 Volume: 51 Pages: 590-593
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] The Role of Collision Ionization of K-Shell Ions in Nonequilibrium Plasmas Produced by the Action of Super Strong, Ultrashort PW-Class Laser Pulses on Micron-Scale Argon Clusters with Intensity up to 5×21 W/cm2 (2023)
  • Author(s): I. Yu. Skobelev, Y. Fukuda, H. Kiriyama et al.
  • Journal Title: Photonics Volume: 10 Issue: 11 Pages: 1250-1250
  • DOI: 10.3390/photonics10111250
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Precise pointing control of high-energy electron beam from laser wakefield acceleration using an aperture (2023)
  • Author(s): Nakanii Nobuhiko、Huang Kai、Kondo Kotaro、Kiriyama Hiromitsu、Kando Masaki
  • Journal Title: Applied Physics Express Volume: 16 Issue: 2 Pages: 026001-026001
  • DOI: 10.35848/1882-0786/acb892
  • Peer Reviewed / Open Access
• [Journal Article] Enhanced ion acceleration from transparency-driven foils demonstrated at two ultraintense laser facilities (2023)
  • Author(s): N. P. Dover, T. Ziegler, S. Assenbaum, C. Bernert, F. Brack, S. Bock, T. E. Cowan, E. J. Ditter, M. Garten, L. Gaus, I. Goethel, G. S. Hicks, H. Kiriyama, M. Nishiuchi, et al.
  • Journal Title: Light: Science & Applications Volume: 12 Issue: 1 Pages: 71-71
  • DOI: 10.1038/s41377-023-01083-9
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Enhanced diagnostics of radiating relativistic singularities and BISER by nonlinear post-compression of optical probe pulse (2022)
  • Author(s): A. V. Kotov, T. Zh. Esirkepov, A. A. Soloviev, Sagisaka, K. Ogura, A. Bierwage, M. Kando, H. Kiriyama, M. V. Starodubtsev, A. Khazanov, Yu. Mironov, and A. S. Pirozhkov
  • Journal Title: Journal of Instrumentation Volume: 17 Issue: 07 Pages: P07035-P07035
  • DOI: 10.1088/1748-0221/17/07/p07035
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Characterization of the plasma mirror system at the J-KAREN-P facility (2022)
  • Author(s): A. Kon, M. Nishiuchi, Y. Fukuda, K. Kondo, K. Ogura, A. Sagisaka, Y. Miyasaka, N. P. Dover, M. Kando, A. S. Pirozhkov, I. Daito, L. Chang, Il W. Choi, C. Hee Nam, T. Ziegler, H.-P. Schlenvoigt, K. Zeil, U. Schramm, and H. Kiriyam
  • Journal Title: High Power Laser Science and Engineering Volume: 10 Pages: 25-25
  • DOI: 10.1017/hpl.2022.15
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Laser-driven multi-MeV high-purity proton acceleration via anisotropic ambipolar expansion of micron-scale hydrogen clusters (2022)
  • Author(s): S. Jinno, M. Kanasaki, T. Asai, R. Matsui, A. S. Pirozhkov, K. Ogura, A. Sagisaka, Y. Miyasaka, N. Nakanii, M. Kando, N. Kitagawa, K. Morishima, S. Kodaira, Y. Kishimoto, T. Yamauchi, M. Uesaka, H. Kiriyama, and Y. Fukuda
  • Journal Title: Scientific Reports Volume: 12 Issue: 1 Pages: 16753-16753
  • DOI: 10.1038/s41598-022-18710-x
  • Peer Reviewed / Open Access
• [Journal Article] J-KAREN-P ペタワットレーザーシステムとその利用研究のリモート化と自動化への取り組み (2022)
  • Author(s): 桐山 博光，眞柴 雄司，宮坂 泰弘，中新 信彦，近藤 康太郎，今 亮，福田 祐仁，西内 満美子
  • Journal Title: レーザー研究 Volume: 50 Pages: 678-682
  • Peer Reviewed
• [Journal Article] 超高強度レーザーによる量子ビーム科学 (2022)
  • Author(s): 桐山 博光，宮坂 泰弘，眞柴 雄司，中新 信彦，近藤 康太郎，今 亮，福田 祐仁，西内 満美子，ピロジコフ アレキサンダー，匂坂 明人，小倉 浩一，神門 正城
  • Journal Title: フォトニクスニュース Volume: 8 Pages: 4-9
  • Peer Reviewed
• [Journal Article] Robustness of large‐area suspended graphene under interaction with intense laser (2022)
  • Author(s): Y. Kuramitsu, T. Minami, T. Hihara, K. Sakai, T. Nishimoto, S. Isayama, Y.T. Liao, K.T. Wu, W.Y. Woon, S.H. Chen, Y.L. Liu, S.M. He, C Y. Su, M. Ota, S. Egashira, A. Morace, Y. Sakawa, H. Habara, R. Kodama, L.N.K. Dohl, N. Woolsey, M. Koenig, M. Kanasaki, T. Asai, T. Yamauchi, K. Oda, Ko. Kondo, H. Kiriyama, Y. Fukuda
  • Journal Title: Scientific Reports Volume: 12 Issue: 1 Pages: 2346-2346
  • DOI: 10.1038/s41598-022-06055-4
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Enhancement of pre-pulse and picosecond pedestal contrast of the petawatt J-KAREN-P laser (2021)
  • Author(s): Hiromitsu Kiriyama; Yasuhiro Miyasaka; Akira Kon; Mamiko Nishiuchi; Akito Sagisaka; Hajime Sasao; Alexander S. Pirozhkov; Yuji Fukuda; Koichi Ogura; Kotaro Kondo; Nicholas P. Dover; and Masaki Kando
  • Journal Title: High Power Laser Science and Engineering Volume: 9
  • DOI: 10.1017/hpl.2021.51
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Highly stable sub-nanosecond Nd:YAG pump laser for optically synchronized optical parametric chirped-pulse amplification (2021)
  • Author(s): Y. Miyasaka, K. Kondo, M. Kishimoto, M. Mori, M. Kando and H. Kiriyama
  • Journal Title: Optics Express Volume: 29 Issue: 20 Pages: 32404-32411
  • DOI: 10.1364/oe.430953
  • Peer Reviewed / Open Access
• [Presentation] High-Contrast, High-Intensity “J-KAREN-P” Laser Facility (2024)
  • Author(s): H. Kiriyama
  • Organizer: The 3rd International Conference on Physics under Synergetic Extreme Conditions held jointly with the Summer School of SECUF
  • Int'l Joint Research / Invited
• [Presentation] Origin and suppression of the pre-pulse and pedestal of the J-KAREN-P laser facility (2024)
  • Author(s): H. Kiriyama, Y. Miyasaka, A. Kon, M. Nishiuchi, Y. Fukuda, A. Sagisaka, H. Sasao, A. S. Pirozhkov, K. Ogura, Ko. Kondo, N. P. Dover, L. Chang, N. Nakanii, Y. Mashiba, M. Kando, S. Bock, T. Ziegler, T. Puschel, H.-P. Schlenvoigt, K. Zeil, U. Schramm, I. W. Choi, and C. H. Nam
  • Organizer: The 16th Pacific Rim Conference on Lasers and Electro-Optics (CLEO-PR 2024)
  • Int'l Joint Research / Invited
• [Presentation] Ultra-high intense laser for quantum beam science (2024)
  • Author(s): H. Kiriyama, Y. Miyasaka, A. Kon, M. Nishiuchi, Y. Fukuda, A. Sagisaka, H. Sasao, A. S. Pirozhkov, K. Ogura, Ko. Kondo, N. P. Dover, L. Chang, N. Nakanii, Y. Mashiba, M. Kando, S. Bock, T. Ziegler, T. Puschel, H.-P. Schlenvoigt, K. Zeil, U. Schramm, I. W. Choi, and C. H. Nam
  • Organizer: The 10th International Conference on Ultrahigh Intensity Lasers (ICUIL 2024)
  • Int'l Joint Research / Invited
• [Presentation] Comparative study on the temporal contrast of the petawatt J-KAREN-P laser (2024)
  • Author(s): H. Kiriyama, Y. Miyasaka, A. Kon, M. Nishiuchi, Y. Fukuda, A. Sagisaka, H. Sasao, A. S. Pirozhkov, K. Ogura, Ko. Kondo, N. P. Dover, L. Chang, N. Nakanii, Y. Mashiba, M. Kando, S. Bock, T. Ziegler, T. Puschel, H.-P. Schlenvoigt, K. Zeil, U. Schramm, I. W. Choi, and C. H. Nam
  • Organizer: Advanced Lasers, High-Power Lasers, and Applications XV
  • Int'l Joint Research / Invited
• [Presentation] Ultra-high intense laser for high field science (2024)
  • Author(s): H. Kiriyama, Y. Miyasaka, A. Kon, M. Nishiuchi, Y. Fukuda, A. Sagisaka, H. Sasao, A. S. Pirozhkov, K. Ogura, Ko. Kondo, N. P. Dover, L. Chang, N. Nakanii, Y. Mashiba, M. Kando, S. Bock, T. Ziegler, T. Puschel, H.-P. Schlenvoigt, K. Zeil, U. Schramm, I. W. Choi, and C. H. Nam
  • Organizer: The Seminar at the Shanghai Institute of Optics and Fine Mechanics (SIOM)
  • Int'l Joint Research / Invited
• [Presentation] 超高強度・超高品質 "J-KAREN-P” ペタワットレーザー (2024)
  • Author(s): 桐山博光
  • Organizer: 一般社団法人 レーザー学会学術講演会 第44回年次大会
  • Invited
• [Presentation] Investigation and suppression of pre-pulses in the J-KAREN-P laser (2023)
  • Author(s): H. Kiriyama, Y. Miyasaka, A. Kon, M. Nishiuchi, Y. Fukuda, A. Sagisaka, H. Sasao, A. S. Pirozhkov, Koichi Ogura, Ko. Kondo, N. P. Dover, C. Liu, N. Nakanii, Y. Mashiba, M. Kando, S. Bock, T. Ziegler, T. Puschel, H.-P. Schlenvoigt, K. Zeil, U. Schramm, I. W. Choi, C. H. Nam
  • Organizer: Optics & Photonics Intrnational Congress (OPIC) 2023
  • Int'l Joint Research / Invited
• [Presentation] Experimental demonstration of temporal contrast enhancement in the petawatt J-KAREN-P laser (2023)
  • Author(s): H. Kiriyama, Y. Miyasaka, A. Kon, M. Nishiuchi, Y. Fukuda, A. Sagisaka, H. Sasao, A. S. Pirozhkov, K. Ogura, Ko. Kondo, N. P. Dover, C. Liu, N. Nakanii, Y. Mashiba, M. Kando, S. Bock, T. Ziegler, T. Puschel, H.-P. Schlenvoigt, K. Zeil, U. Schramm, I. W. Choi, and C. H. Nam
  • Organizer: SPIE Optics + Optoelectronics 2023
  • Int'l Joint Research
• [Presentation] Demonstration of high temporal contrast performance of the J-KAREN-P petawatt laser facility (2023)
  • Author(s): H. Kiriyama, Y. Miyasaka, A. Kon, M. Nishiuchi, Y. Fukuda, A. Sagisaka, H. Sasao, A. S. Pirozhkov, K. Ogura, Ko. Kondo, N. P. Dover, C. Liu, N. Nakanii, Y. Mashiba, M. Kando, S. Bock, T. Ziegler, T. Puschel, H.-P. Schlenvoigt, K. Zeil, U. Schramm, I. W. Choi, and C. H. Nam
  • Organizer: The 5th International Symposium on High Power Laser Sceince and Enginnering & Celebrating the 10th Anniversary of Journal HPLSE (HPLSE2023)
  • Int'l Joint Research / Invited
• [Presentation] J-KAREN-Pペタワットレーザー施設における時間コントラスト向上 (2023)
  • Author(s): 桐山博光，宮坂泰弘, 今 亮,西内満美子, 福田祐仁, 笹尾 一, ピロジコフ・アレキサンダー, 小倉浩一, 近藤康太郎, ニコラス・ドーバー, リウ チャン, 中新信彦, 眞柴雄司, 神門正城
  • Organizer: 光・量子ビーム科学合同シンポジウム 2023
• [Presentation] Investigation and Enhancement of Temporal Contrast of the Petawatt J-KAREN-P Laser (2023)
  • Author(s): H. Kiriyama, Y. Miyasaka, A. Kon, M. Nishiuchi, Y. Fukuda, A. Sagisaka, H. Sasao, A. S. Pirozhkov, K. Ogura, Ko. Kondo, N. P. Dover, L. Chang, N. Nakanii, Y. Mashiba, M. Kando, S. Bock, T. Ziegler, T. Puschel, H.-P. Schlenvoigt, K. Zeil, U. Schramm, I. W. Choi, and C. H. Nam
  • Organizer: IMPULSE workshop: standardization of metrology procedures for lasers and secondary sources (STAMPLASS 2023)
  • Int'l Joint Research / Invited
• [Presentation] Improvement in the temporal contrast of the petawatt J-KAREN-P laser (2022)
  • Author(s): H. Kiriyama, Y. Miyasaka, A. Kon, M. Nishiuchi, A. Sagisaka, H. Sasao, A. S. Pirohzkov, K. Ogura, K. Kondo, N. P. Dover, L. Chang, N. Nakanii, Y. Mashiba and M. Kando
  • Organizer: The 11th Advanced Lasers and Photon Sources (ALPS2022)
  • Int'l Joint Research
• [Presentation] Improvement in fs pre-pulse and ps pedestal in the J-KAREN-P laser facility (2022)
  • Author(s): H. Kiriyama, Y. Miyasaka, A. Kon, M. Nishiuchi, A. Sagisaka, H. Sasao, A. S. Pirozhkov, Y. Fukuda, K. Ogura, Ko. Kondo, N. P. Dover, and M. Kando
  • Organizer: Conference on Lasers and Electro-Optics (CLEO) Laser Science to Photonic Applications 2022
  • Int'l Joint Research
• [Presentation] Demonstration of pulse temporal quality improvement in femtosecond pre-pulse and picosecond pedestal in the J-KAREN-P laser (2022)
  • Author(s): H. Kiriyama, Y. Miyasaka, A. Kon, M. Nishiuchi, A. Sagisaka, H. Sasao, A. S. Pirozhkov, Y. Fukuda, K. Ogura, Ko. Kondo, N. P. Dover, L. Chang, N. Nakanii, Y. Mashiba, and M. Kando
  • Organizer: The 9th International Conference on Ultrahigh Intensity Lasers (ICUIL 2022)
  • Int'l Joint Research
• [Presentation] "J-KAREN-P” 高ビーム品質・超高ピークパワーレーザー (2022)
  • Author(s): 桐山博光
  • Organizer: 5th RIKEN-RAP and QST-KPSI Joint Seminar
  • Invited
• [Presentation] Status of the J-KAREN-P laser performance (2021)
  • Author(s): H. Kiriyama, A. S. Pirozhkov, M. Nishiuchi, Y. Fukuda, K. Ogura, A. Sagisaka, Y. Miyasaka, N. P. Dover, Ko. Kondo, H. F. Lowe, A. Kon, H. Sakaki, J. K. Koga, T. Zh. Esirkepov, K. Huang, M. Kando, and K. Kondo
  • Organizer: The 4th International Symposium on High Power Laser Science and Engineering (HPLSE 2021)
  • Int'l Joint Research / Invited
• [Presentation] Improvement of the temporal contrast of pre-pulses by post-pulses in a petawatt J-KAREN-P laser facility (2021)
  • Author(s): H. Kiriyama, Y. Miyasaka, A. Sagisaka, K. Ogura, M. Nishiuchi, A. Kon, A. S. Pirozhkov, Y. Fukuda, N. P. Dover, Ko. Kondo, M. Kando, K. Kondo, S. Bock, T. Ziegler, T. Puschel, K. Zeil, and U. Schramm
  • Organizer: Conference on Lasers and Electro-Optics (CLEO) Laser Science to Photonic Applications
  • Int'l Joint Research
• [Presentation] 超高強度レーザーの現状と今後 (2021)
  • Author(s): 桐山博光
  • Organizer: 第6回フォトニクスワークショップ「光が拓く科学技術の未来」
  • Invited