Ultrabright x-ray harmonic comb by relativistic plasma singularity

• Project/Area Number: 26707031
• Research Category: Grant-in-Aid for Young Scientists (A)
• Allocation Type: Partial Multi-year Fund
• Research Field: Plasma science
• Research Institution: National Institutes for Quantum and Radiological Science and Technology (2016-2017); Japan Atomic Energy Agency (2014-2015)
• Principal Investigator: Pirozhkov Alexander 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, 上席研究員(定常) (00446410)
• Project Period (FY): 2014-04-01 – 2018-03-31
• Project Status: Completed (Fiscal Year 2017)
• Budget Amount: ¥22,750,000 (Direct Cost: ¥17,500,000、Indirect Cost: ¥5,250,000); Fiscal Year 2017: ¥2,730,000 (Direct Cost: ¥2,100,000、Indirect Cost: ¥630,000); Fiscal Year 2016: ¥5,460,000 (Direct Cost: ¥4,200,000、Indirect Cost: ¥1,260,000); Fiscal Year 2015: ¥8,060,000 (Direct Cost: ¥6,200,000、Indirect Cost: ¥1,860,000); Fiscal Year 2014: ¥6,500,000 (Direct Cost: ¥5,000,000、Indirect Cost: ¥1,500,000)
• Keywords: コヒーレントX線放射 / 超高強度レーザー / レーザー光とプラズマの相互作用 / 相対論的レーザープラズマ / 相対論的電子スパイク / レーザー光の高次高調波 / BISER / 相対論的プラズマ / プラズマ制御・レーザー

Outline of Final Research Achievements

Previously I experimentally discovered bright coherent soft x-rays (high harmonics) using 10-200 Terawatt [1 TW=10^12W] 30-50 femtosecond [1 fs=10^-15s] lasers focused to gas targets. We proposed a theory of x-ray generation by relativistic plasma singularities.
Here I tested and confirmed the theory by measuring point-like x-ray sources (the singularities). We generalized the theory and formulated a Burst Intensification by Singularity Emitting Radiation (BISER) concept. I experimentally demonstrated strong dependence of the x-ray brightness on laser quality. I significantly enhanced our J-KAREN-P laser quality. I for the first time experimentally demonstrated coherent x-ray generation tuning using plasma density tailoring.
My results open a way to compact bright coherent attosecond [1 as=10^-18s] x-ray source demanded by university and industry labs for coherent x-ray imaging and other applications in material and life sciences.

Academic Significance and Societal Importance of the Research Achievements

BISER x-ray yield enhancement and tuning open the way to a compact, ultra-bright, spatially and temporally coherent x-ray source for pumping, probing, imaging, and atto-science.
The developed diagnostics and techniques are useful for applications of high-power lasers and are adopted by the community.

Research Products

• [Journal Article] High-contrast high-intensity repetitive petawatt laser (2018)
  • Author(s): H. Kiriyama, A. S. Pirozhkov, M. Nishiuchi, Y. Fukuda, K. Ogura, A. Sagisaka, Y. Miyasaka, M. Mori, H. Sakaki, N. P. Dover, K. Kondo, J. K. Koga, T. Zh. Esirkepov, M. Kando, K. Kondo
  • Journal Title: Optics Letters Volume: In press
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Coherent, Short-Pulse X-ray Generation via Relativistic Flying Mirrors (2018)
  • Author(s): Kando Masaki、Esirkepov Timur、Koga James、Pirozhkov Alexander、Bulanov Sergei
  • Journal Title: Quantum Beam Science Volume: 2 Issue: 2 Pages: 9-9
  • DOI: 10.3390/qubs2020009
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Laser Requirements for High-Order Harmonic Generation by Relativistic Plasma Singularities (2018)
  • Author(s): Pirozhkov A.、Esirkepov T.、Pikuz T.、Faenov A.、Sagisaka A.、Ogura K.、Hayashi Y.、Kotaki H.、Ragozin E.、Neely D.、Koga J.、Fukuda Y.、Nishikino M.、Imazono T.、Hasegawa N.、Kawachi T.、Daido H.、Kato Y.、Bulanov S.、Kondo K.、Kiriyama H.、Kando M.
  • Journal Title: Quantum Beam Science Volume: 2 Issue: 1 Pages: 7-7
  • DOI: 10.3390/qubs2010007
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Burst intensification by singularity emitting radiation in multi-stream flows (2017)
  • Author(s): Pirozhkov A. S.、Esirkepov T. Zh.、Pikuz T. A.、Faenov A. Ya.、Ogura K.、Hayashi Y.、Kotaki H.、Ragozin E. N.、Neely D.、Kiriyama H.、Koga J. K.、Fukuda Y.、Sagisaka A.、Nishikino M.、Imazono T.、Hasegawa N.、Kawachi T.、Bolton P. R.、Daido H.、Kato Y.、Kondo K.、Bulanov S. V.、Kando M.
  • Journal Title: Scientific Reports Volume: 7 Issue: 1 Pages: 17968-17968
  • DOI: 10.1038/s41598-017-17498-5
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] High resolution X-ray spectra of stainless steel foils irradiated by femtosecond laser pulses with ultra-relativistic intensities (2017)
  • Author(s): Alkhimova M. A.、Faenov A. Ya.、Skobelev I. Yu.、Pikuz T. A.、Nishiuchi M.、Sakaki H.、Pirozhkov A. S.、Sagisaka A.、Dover N. P.、Kondo Ko.、Ogura K.、Fukuda Y.、Kiriyama H.、Nishitani K.、Miyahara T.、Watanabe Y.、Pikuz S. A.、Kando M.、Kodama R.、Kondo K.
  • Journal Title: Optics Express Volume: 25 Issue: 23 Pages: 29501-29511
  • DOI: 10.1364/oe.25.029501
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Approaching the diffraction-limited, bandwidth-limited Petawatt (2017)
  • Author(s): Pirozhkov Alexander S.、Fukuda Yuji、Nishiuchi Mamiko、Kiriyama Hiromitsu、Sagisaka Akito、Ogura Koichi、Mori Michiaki、Kishimoto Maki、Sakaki Hironao、Dover Nicholas P.、Kondo Kotaro、Nakanii Nobuhiko、Huang Kai、Kanasaki Masato、Kondo Kiminori、Kando Masaki
  • Journal Title: Optics Express Volume: 25 Issue: 17 Pages: 20486-20501
  • DOI: 10.1364/oe.25.020486
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] High-Order Harmonic Generation by Relativistic Plasma Singularities: the Driving Laser Requirements (2017)
  • Author(s): 2.A. S. Pirozhkov, T. Zh. Esirkepov, T. A. Pikuz, A. Ya. Faenov, K. Ogura, Y. Hayashi, H. Kotaki, E. N. Ragozin, D. Neely, H. Kiriyama, J. K. Koga, Y. Fukuda, A. Sagisaka, M. Nishikino, T. Imazono, N. Hasegawa, T. Kawachi, H. Daido, Y. Kato, S. V. Bulanov, K. Kondo and M. Kando
  • Journal Title: Springer Proceedings in Physics Volume: In press
  • Peer Reviewed / Int'l Joint Research / Acknowledgement Compliant
• [Journal Article] Burst intensification by singularity emitting radiation in multi-stream flows (2016)
  • Author(s): A. S. Pirozhkov, T. Zh. Esirkepov, T. A. Pikuz, A. Ya. Faenov, K. Ogura, Y. Hayashi, H. Kotaki, E. N. Ragozin, D. Neely, H. Kiriyama, J. K. Koga, Y. Fukuda, A. Sagisaka, M. Nishikino, T. Imazono, N. Hasegawa, T. Kawachi, P. R. Bolton, H. Daido, Y. Kato, K. Kondo, S. V. Bulanov, M. Kando
  • Journal Title: arXiv Volume: 1611.05547
  • Open Access / Int'l Joint Research / Acknowledgement Compliant
• [Journal Article] Aperiodic multilayer structures in soft X-ray optics (2015)
  • Author(s): A. S. Pirozhkov and E. N. Ragozin
  • Journal Title: Physics - Uspekhi Volume: 58 Issue: 11 Pages: 1095-1105
  • DOI: 10.3367/ufne.0185.201511e.1203
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] High order harmonics from relativistic electron spikes (2014)
  • Author(s): A. S. Pirozhkov, M. Kando, T. Zh. Esirkepov, P. Gallegos, H. Ahmed et al.
  • Journal Title: New Journal of Physics Volume: 16 Issue: 9 Pages: 1-30
  • DOI: 10.1088/1367-2630/16/9/093003
  • Peer Reviewed / Open Access / Acknowledgement Compliant
• [Journal Article] High-Contrast, High-Intensity Petawatt-Class Laser and Applications (2014)
  • Author(s): H. Kiriyama, M. Mori, A.S. Pirozhkov, K. Ogura, A. Sagisaka, A. Kon, T.Z. Esirkepov, Y. Hayashi, H. Kotaki, M. Kanasaki, H. Sakaki, Y. Fukuda, J. Koga, M. Nishiuchi, M. Kando, S.V. Bulanov, K. Kondo, P.R. Bolton, O. Slezak, D. Vojna, M. Sawicka-Chyla, V. Jambunathan, A. Lucianetti and T. Mocek
  • Journal Title: IEEE Sel. Topics J. Quntum Electron. Volume: 21 Issue: 1 Pages: 16011181-18
  • DOI: 10.1109/jstqe.2014.2336774
  • Peer Reviewed
• [Presentation] BISER: A New Tool for Laboratory Astrophysics (2018)
  • Author(s): A. S. Pirozhkov, T. Zh. Esirkepov, A. Sagisaka, K. Ogura, J. K. Koga, B. Gonzalez-Izquierdo, T. A. Pikuz, E. N. Ragozin, D. Neely, H. Kiriyama, K. Kondo, T. Kawachi, S. V. Bulanov, and M. Kando
  • Organizer: International Conference on High Energy Density Laboratory Astrophysics (HEDLA)
  • Int'l Joint Research
• [Presentation] Burst Intensification by Singularity Emitting Radiation (BISER) in multi-stream flows (2018)
  • Author(s): A.S. Pirozhkov, T.Zh. Esirkepov, T.A. Pikuz, A.Ya. Faenov, K. Ogura, A. Sagisaka, J. K. Koga, E.N. Ragozin, D. Neely, N. Nakanii, K. Huang, Y. Hayashi, H. Kotaki, Y. Fukuda, S. Namba, I. Daito, M. Nishikino, T. Imazono, N. Hasegawa, H. Kiriyama, P.R.Bolton, H. Daido, Y. Kato, K. Kondo, T. Kawachi, S.V.Bulanov, M. Kando
  • Organizer: Opto-2018 Symposium on Photon and Beam Science
• [Presentation] Control of Burst Intensification by Singularity Emitting Radiation (BISER) with density jump (2018)
  • Author(s): A. S. Pirozhkov, T. Zh. Esirkepov, A. Sagisaka, K. Ogura, N. Nakanii, H. Kai, T. A. Pikuz, A. Ya. Faenov, S. Namba, I. Daito, Y. Fukuda, J. K. Koga, H. Kiriyama, K. Kondo, T. Kawachi, M. Kando
  • Organizer: The Optics & Photonics International Congress OPIC-2018, International Conference on High-Energy Density Sciences HEDS-2018
  • Int'l Joint Research / Invited
• [Presentation] Relativistic plasma singularity and its coherent x-ray emission control using density jump (2018)
  • Author(s): A. S. Pirozhkov, T. Zh. Esirkepov, A. Sagisaka, K. Ogura, N. Nakanii, K. Huang, T. A. Pikuz, A. Ya. Faenov, S. Namba, Y. Fukuda, J. K. Koga, H. Kiriyama, K. Kondo, T. Kawachi, and M. Kando
  • Organizer: JPS Spring Meeting
• [Presentation] Plasma density jump for the control of coherent x-ray emission via BISER mechanism (2018)
  • Author(s): A. S. Pirozhkov, T. Zh. Esirkepov, A. Sagisaka, K. Ogura, N. Nakanii, K. Huang, T. A. Pikuz, A. Ya. Faenov, S. Namba, I. Daito, Y. Fukuda, J. K. Koga, H. Kiriyama, K. Kondo, T. Kawachi, and M. Kando
  • Organizer: JSAP Spring Meeting
• [Presentation] Characterization of the J-KAREN-P laser spot at 300 TW and pulse shape at full beam diameter (2017)
  • Author(s): A. S. Pirozhkov
  • Organizer: Opto 2017 Symposium on Photon and Beam Science
  • Place of Presentation: Osaka University, Suita, Osaka, Japan
  • Year and Date: 2017-05-09
• [Presentation] J-KAREN-P Laser Wavefront, Spot, and Pulse Shape (2017)
  • Author(s): A. S. Pirozhkov
  • Organizer: The Optics & Photonics International Congress OPIC-2017, The 6th Advanced Lasers and Photon Sources Conference ALPS-2017
  • Place of Presentation: Pacifico Yokohama, Yokohama, Kanagawa, Japan
  • Year and Date: 2017-04-18
  • Int'l Joint Research
• [Presentation] BISER: Burst Intensification by Singularity Emitting Radiation (2017)
  • Author(s): A. S. Pirozhkov
  • Organizer: The Optics & Photonics International Congress OPIC-2017, International Conference on High-Energy Density Sciences HEDS-2017
  • Place of Presentation: Pacifico Yokohama, Yokohama, Kanagawa, Japan.
  • Year and Date: 2017-04-18
  • Int'l Joint Research
• [Presentation] Analysis of spectra of high-order harmonics from relativistic singularities (2017)
  • Author(s): A. S. Pirozhkov
  • Organizer: JPS Spring Meeting
  • Place of Presentation: Osaka University, Toyonaka, Osaka, Japan
  • Year and Date: 2017-03-17
• [Presentation] Point-like x-ray sources (2017)
  • Author(s): A. S. Pirozhkov
  • Organizer: XXI International Symposium "Nanophysics and Nanoelectronics"
  • Place of Presentation: Nizhny Novgorod, Russia
  • Year and Date: 2017-03-13
  • Int'l Joint Research / Invited
• [Presentation] Point-like coherent soft x-ray sources and challenges for optics (2017)
  • Author(s): A. S. Pirozhkov, T. Zh. Esirkepov, A. Sagisaka, K. Ogura, T. A. Pikuz, A. Ya. Faenov, J. K. Koga, H. Kiriyama, E. N. Ragozin, D. Neely, H. Daido, Y. Kato, S. V. Bulanov, K. Kondo, T. Kawachi, and M. Kando
  • Organizer: The 14th Symposium on X-ray Imaging Optics
  • Invited
• [Presentation] J-KAREN-P Laser: Approaching the diffraction-limited, bandwidth-limited Petawatt (2017)
  • Author(s): A. S. Pirozhkov, Y. Fukuda, M. Nishiuchi, H. Kiriyama, A. Sagisaka, K. Ogura, M. Mori, M. Kishimoto, H. Sakaki, N. P. Dover, K. Kondo, N. Nakanii, K. Huang, M. Kanasaki, K. Kondo, and M. Kando
  • Organizer: Japan-US Technical Meeting on High Energy Density Sciences
  • Int'l Joint Research
• [Presentation] Ultrahigh-Resolution Imaging of Bio-Samples with Modern and Future Ultrabright X-Ray Sources: the Source and Method Requirements (2017)
  • Author(s): A. S. Pirozhkov
  • Organizer: The 1st QST International Symposium "Quantum Life Science"
  • Int'l Joint Research
• [Presentation] Characterization of the J-KAREN-P laser spot at 300 TW and pulse shape at full beam diameter (2017)
  • Author(s): A. S. Pirozhkov, Y. Fukuda, M. Nishiuchi, H. Kiriyama, A. Sagisaka, K. Ogura, M. Mori, M. Kishimoto, H. Sakaki, N. P. Dover, K. Kondo, N. Nakanii, K. Huang, M. Kanasaki, K. Kondo, and M. Kando
  • Organizer: Opto 2017 Symposium on Photon and Beam Science
• [Presentation] J-KAREN-P wavefront, spot, and pulse shape (2016)
  • Author(s): A. S. Pirozhkov
  • Organizer: Opto 2016 Symposium on Photon and Beam Science
  • Place of Presentation: Senri Life Science Center, Toyonaka, Osaka, Japan
  • Year and Date: 2016-11-24
• [Presentation] High-order harmonic generation by relativistic plasma singularities (2016)
  • Author(s): A. S. Pirozhkov
  • Organizer: The 15th International Conference on X-Ray Lasers (ICXRL2016)
  • Place of Presentation: Nara Kasugano International Forum, Nara, Japan
  • Year and Date: 2016-05-22
  • Int'l Joint Research / Invited
• [Presentation] High-order harmonic generation by relativistic plasma singularities (2016)
  • Author(s): Alexander S. Pirozhkov
  • Organizer: The 15th International Conference on X-Ray Lasers (ICXRL2016)
  • Place of Presentation: Nara Kasugano International Forum, Nara, Nara, Japan
  • Year and Date: 2016-05-22
  • Int'l Joint Research / Invited
• [Presentation] Required Laser Properties for Efficient High-Order Harmonic Generation from Relativistic Electron Spikes (2016)
  • Author(s): Alexander S. Pirozhkov
  • Organizer: The Optics & Photonics International Congress OPIC-2016, International Conference on High-Energy Density Sciences HEDS-2016
  • Place of Presentation: Pacifico Yokohama, Yokohama, Kanagawa, Japan
  • Year and Date: 2016-05-17
  • Int'l Joint Research / Invited
• [Presentation] High-Order Harmonics from Relativistic Electron Spikes: Statistical Analysis (2016)
  • Author(s): Alexander S. Pirozhkov
  • Organizer: JSAP Spring Meeting
  • Place of Presentation: Tokyo Institute of Technology, Meguro-ku, Tokyo, Japan
  • Year and Date: 2016-03-19
• [Presentation] High order harmonics from relativistic electron spikes: Scalings and laser requirements (2016)
  • Author(s): Alexander S. Pirozhkov
  • Organizer: Apollon FIRE User’s Meeting
  • Place of Presentation: SOLEIL Amphitheatre, France
  • Year and Date: 2016-02-11
  • Int'l Joint Research
• [Presentation] Coherent emission from plasma singularities (2015)
  • Author(s): Alexander S. Pirozhkov
  • Organizer: JPS Autumn Meeting
  • Place of Presentation: Kansai University, Suita, Osaka, Japan
  • Year and Date: 2015-09-16
• [Presentation] Laser Requirements for Efficient X-Ray Generation by Relativistic Electron Spikes (2015)
  • Author(s): Alexander S. Pirozhkov
  • Organizer: JSAP Autumn Meeting
  • Place of Presentation: Nagoya Congress Center, Nagoya, Aichi, Japan
  • Year and Date: 2015-09-13
• [Presentation] Scalings of High-Order Harmonics from Relativistic Electron Cusps (2015)
  • Author(s): Alexander S. Pirozhkov
  • Organizer: SPIE Optics+Photonics Symposium, International Conference on X-Ray Lasers and Coherent X-Ray Sources: Development and Applications XI
  • Place of Presentation: San Diego, USA
  • Year and Date: 2015-08-09
  • Int'l Joint Research
• [Presentation] High-Order Harmonics from Relativistic Electron Spikes: Dependence on Parameters (2015)
  • Author(s): Alexander S. Pirozhkov
  • Organizer: The Optics & Photonics International Congress OPIC-2014, International Conference on High-Energy Density Sciences HEDS 2015
  • Place of Presentation: Pacifico Yokohama, Yokohama, Japan
  • Year and Date: 2015-04-22 – 2015-04-24
• [Presentation] High-Order Harmonics from Relativistic Electron Spikes: Dependence on Parameters (2015)
  • Author(s): Alexander S. Pirozhkov
  • Organizer: The Optics & Photonics International Congress OPIC-2015, International Conference on High-Energy Density Sciences HEDS-2015
  • Place of Presentation: Pacifico Yokohama, Yokohama, Kanagawa, Japan
  • Year and Date: 2015-04-22
  • Int'l Joint Research
• [Presentation] Scalings of High-Order Harmonics from Relativistic Electron Spikes (2015)
  • Author(s): Alexander S. Pirozhkov
  • Organizer: JSAP Spring Meeting
  • Place of Presentation: Tokai University, Kanagawa, Japan
  • Year and Date: 2015-03-11 – 2015-03-14
• [Presentation] High-order harmonics from singularities of relativistic plasma (2014)
  • Author(s): Alexander S. Pirozhkov
  • Organizer: The International Symposium "Topical Problems Of Nonlinear Wave Physics" NWP 2014
  • Place of Presentation: Nizhny Novgorod - Saratov - Nizhny Novgorod, Russia
  • Year and Date: 2014-07-17 – 2014-07-23
  • Invited
• [Presentation] High-Resolution XUV Imaging of Catastrophes in Relativistic Plasma (2014)
  • Author(s): Alexander S. Pirozhkov
  • Organizer: The Optics & Photonics International Congress OPIC-2014, International Conference on High-Energy Density Science HEDS 2014
  • Place of Presentation: Pacifico Yokohama, Yokohama, Japan
  • Year and Date: 2014-04-22 – 2014-04-25
• [Remarks] プラズマの特異点からの強力な軟X線バーストを発見 －宇宙でも起こり得る普遍的な新しい放射機構の提案－
  • URL: http://www.qst.go.jp/information/itemid034-003332.html
• [Remarks] APS-TV film about KPSI
  • URL: https://www.youtube.com/watch?v=UBK86zX_LCk
• [Remarks] Video Abstract of the paper NJP 16, 093003 (2014)
  • URL: http://iopscience.iop.org/1367-2630/16/9/093003/video/abstract