New high harmonic generation mechanism

2013 Fiscal Year Final Research Report

• Project/Area Number: 23740413
• Research Category: Grant-in-Aid for Young Scientists (B)
• Allocation Type: Multi-year Fund
• Research Field: Plasma science
• Research Institution: Japan Atomic Energy Agency
• Principal Investigator: PIROZHKOV Alexander 独立行政法人日本原子力研究開発機構, 原子力科学研究部門 量子ビーム応用研究センター, 研究副主幹 (00446410)
• Project Period (FY): 2011 – 2013
• Keywords: プラズマ制御 / レーザー

Research Abstract

I studied a new regime of high-order harmonic generation in the interaction of multi-terawatt femtosecond lasers focused up to intensity I_0>1e18 W/cm2 into gas jet targets. I determined spectral properties, angular distribution, coherence, and source size. In experiments with the 9 TW J-KAREN laser in Japan Atomic Energy Agency (JAEA), the photon energy of harmonic radiation reached 360 eV, within the "water window" spectral region. I suggested and justified a new model of harmonic generation by relativistic electron spikes, which are density singularities resulting from catastrophes of a multi-stream relativistic plasma flow.
The results may open a way toward a next-generation bright compact coherent x-ray source which can be built on a university-lab-scale repetitive laser and accessible, replenishable, debris-free gas jet target. This will impact many areas of fundamental research and applications requiring a bright x-ray source for pumping, probing, imaging, or attosecond science.

Research Products

• [Journal Article] Ultra-Intense, High Spatio-Temporal Quality Petawatt-Class Laser System and Applications (2013)
  • Author(s): H. Kiriyama, T. Shimomura, M. Mori, Y. Nakai, M. Tanoue, S. Kondo, S. Kanazawa, A. S. Pirozhkov, T. Zh. Esirkepov, Y. Hayashi, K. Ogura, H. Kotaki, M. Suzuki, I. Daito, H. Okada, A. Kosuge, Y. Fukuda, M. Nishiuchi, M. Kando, S. V. Bulanov, K. Nagashima, M. Yamagiwa, K. Kondo, A. Sugiyama, P. R. Bolton, S. Matsuoka, and H. Kan
  • Journal Title: Applied Sciences Volume: 3(1) Pages: 214-250
  • DOI: 10.3390/app3010214
  • Peer Reviewed
• [Journal Article] High performance imaging of relativistic soft X-ray harmonics by sub-micron resolution LiF film detectors (2012)
  • Author(s): T. Pikuz, A. Faenov, A. Pirozhkov, A. Astapov, G. Klushin, S. Pikuz, N. Nagorskiy, S. Magnitskiy, T. Esirkepov, J. Koga, T. Nakamura, S. Bulanov, Y. Fukuda, Y. Hayashi, H. Kotaki, Y. Kato, and M. Kando
  • Journal Title: Physica Status Solidi C Volume: 9(12) Pages: 2331-2335
  • DOI: 10.1002/pssc.201200390
  • Peer Reviewed
• [Journal Article] On the breaking of a plasma wave in a thermal plasma. I. The structure of the density singularity (2012)
  • Author(s): S. V. Bulanov, T. Zh Esirkepov, M. Kando, J. K. Koga, A. S. Pirozhkov, T. Nakamura, S. S. Bulanov, C. B. Schroeder, E. Esarey, F. Califano, and F. Pegoraro
  • Journal Title: Phys. Plasmas Volume: 19(11) Pages: 113102-7
  • DOI: 10.1063/1.4764056
  • Peer Reviewed
• [Journal Article] On the breaking of a plasma wave in a thermal plasma. II. Electromagnetic wave interaction with the breaking plasma wave (2012)
  • Author(s): S. V. Bulanov, T. Zh. Esirkepov, M. Kando, J. K. Koga, A. S. Pirozhkov, T. Nakamura, S. S. Bulanov, C. B. Schroeder, E. Esarey, F. Califano, and F. Pegoraro
  • Journal Title: Phys. Plasmas Volume: 19(11) Pages: 113103-7
  • DOI: 10.1063/1.4764052
  • Peer Reviewed
• [Journal Article] Relativistic high harmonic generation in gas jet targets (2012)
  • Author(s): A. S. Pirozhkov, M. Kando, T. Zh. Esirkepov, P. Gallegos, H. Ahmed, E. N. Ragozin, A. Ya. Faenov, T. A. Pikuz, T. Kawachi, A. Sagisaka, J. K. Koga, M. Coury, J. Green, P. Foster, C. Brenner, B. Dromey, D. R. Symes, M. Mori, K. Kawase, T. Kameshima, Y. Fukuda, L. M. Chen, I. Daito, K. Ogura, Y. Hayashi, H. Kotaki, H. Kiriyama, H. Okada, N. Nishimori, T. Imazono, K. Kondo, T. Kimura, T. Tajima, H. Daido, P. Rajeev, P. McKenna, M. Borghesi, D. Neely, Y. Kato and S. V. Bulanov
  • Journal Title: AIP Conf. Proc (Proc. The 3rd International Symposium "Laser-Driven Relativistic Plasmas Applied to Science, Energy, Industry, and Medicine", Kyoto, Japan, 30 May - 2 June 2011, ed. S. V. Bulanov, A. Yokoyama, Y. I. Malakhov, and Y. Watanabe) Volume: 1465 Pages: 167-171
  • DOI: 10.1063/1.4737557
  • Peer Reviewed
• [Journal Article] Soft-X-Ray Harmonic Comb from Relativistic Electron Spikes (2012)
  • Author(s): A. S. Pirozhkov, M. Kando, T. Zh. Esirkepov, P. Gallegos, H. Ahmed, E. N. Ragozin, A. Ya Faenov, T. A. Pikuz, T. Kawachi, A. Sagisaka, J. K. Koga, M. Coury, J. Green, P. Foster, C. Brenner, B. Dromey, D. R. Symes, M. Mori, K. Kawase, T. Kameshima, Y. Fukuda, L. Chen, I. Daito, K. Ogura, Y. Hayashi, H. Kotaki, H. Kiriyama, H. Okada, N. Nishimori, T. Imazono, K. Kondo, T. Kimura, T. Tajima, H. Daido, P. Rajeev, P. McKenna, M. Borghesi, D. Neely, Y. Kato, and S. V. Bulanov
  • Journal Title: Phys. Rev. Lett Volume: 108(13) Pages: 135004-5
  • DOI: 10.1103/PhysRevLett.108.135004
  • URL: http://journals.aps.org/prl/abstract/10.1103/PhysRevLett.108.135004
  • Peer Reviewed
• [Journal Article] Coherent x-ray generation in relativistic laser/gas jet interactions (2011)
  • Author(s): A. S. Pirozhkov, M. Kando, T. Zh. Esirkepov, P. Gallegos, H. Ahmed, E. N. Ragozin, A. Ya. Faenov, T. A. Pikuz, J. K. Koga, H. Kiriyama, P. McKenna, M. Borghesi, K. Kondo, H. Daido, Y. Kato, D. Neely, and S. V. Bulanov
  • Journal Title: Proc. SPIE (Proc. Int. Conf. X-Ray Lasers and Coherent X-Ray Sources : Development and Applications IX, Optics+Photonics Symposium, San Diego, USA, 23-25 August 2011, ed. J. Dunn and A. Klisnick) (Refereed proceedings paper) Volume: 8140 Pages: 81400A-16
  • DOI: 10.1117/12.892898
  • Peer Reviewed
• [Presentation] "On-axis and off-axis high order harmonics generation by relativistic laser in gas jet target," SPIE 8849, 8849-5 (2013)
  • Author(s): A. S. Pirozhkov
  • Organizer: SPIE Optics+Photonics Symposium, International Conference on X-Ray Lasers and Coherent X-Ray Sources : Development and Applications X
  • Place of Presentation: San Diego, USA
  • Year and Date: 2013-08-27
  • Invited
• [Presentation] "High-Order Harmonic Comb from Relativistic Electron Spikes," CLEO-QELS QW1A.3 (2013)
  • Author(s): A. S. Pirozhkov
  • Organizer: the Conference on Lasers and Electro-Optics CLEO : 2013
  • Place of Presentation: San Jose, USA(DOI:10.1364/CLEO_QELS.2013.QW1A.3)
  • Year and Date: 2013-06-12
  • Invited
• [Presentation] New Coherent X-Ray Source Based on Relativistic High Harmonic Generation in Gas Jet Targets (2011)
  • Author(s): A. S. Pirozhkov
  • Organizer: III International Symposium "Topical Problems of Biophotonics - 2011"
  • Place of Presentation: St. Petersburg - Nizhny Novgorod, Russia
  • Year and Date: 2011-07-18
  • Invited
• [Remarks] ①.朝日新聞「超一瞬のX線 原理実証」平成24年3月15日p.25 Asahi Shimbun, "Ultrafast x-ray generation mechanism established," 15th March 2012,p.25 (in Japanese).
• [Remarks] ① Press-release on publication of Pirozhkov et al., Phys. Rev. Lett. 108 (13), 135004-5 (2012) ホームページ等
  • URL: http://wwwapr.kansai.jaea.go.jp/press-2360.html