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40Complex Systems of Charged Particles and their Interactions with Electromagnetic Radiation 2019
COHERENT X-RAY EMISSION FROM RELATIVISTIC PLASMA SINGULARITIES (BISER)
A.S. Pirozhkov1, T.Zh. Esirkepov2, A. Sagisaka1, K. Ogura1, T.A. Pikuz2,3, A.Ya. Faenov2,3, B. González-Izquierdo1, J.K. Koga1, H. Kiriyama1, N. Nakanii1, K. Huang1, Y. Fukuda1, E.N. Ragozin4,5, D. Neely6,7, H. Daido8, Y. Kato9, K. Kondo1, T. Kawachi1, S. V. Bulanov1,10,11,
and M. Kando1
1Kansai Photon Science Institute, QST, Kizugawa, Kyoto, Japan Open and Transdisciplinary Research Initiatives, Osaka University, Suita, Osaka, Japan 3Joint Institute for High Temperatures of the Russian Academy of Sciences, Moscow, Russia 4P. N. Lebedev Physical Institute of the Russian Academy of Sciences, Moscow, Russia 5Moscow Institute of Physics and Technology (State University), Dolgoprudnyi, Russia 6Central Laser Facility, Rutherford Appleton Laboratory, STFC, Didcot, UK 7Department of Physics, SUPA, University of Strathclyde, Glasgow, UK
o
Institute for Laser Technology, Osaka, Japan 9The Graduate School for the Creation of New Photonics Industries, Hamamatsu, Shizuoka, Japan 10Institute of Physics ASCR, v.v.i. (FZU), ELI-Beamlines Project, Dolní Brezany, Czech Republic 11Prokhorov General Physics Institute of the Russian Academy of Sciences, Moscow, Russia
Burst Intensification by Singularity Emitting Radiation (BISER) [1] is a strong intensification (constructive interference, N2 effect) of traveling waves emittedby singularities produced in multi-stream flows. In the case of relativistic plasma driven by an intense femtosecond laser, multi-stream electronflows produce singularities where the electron density can be orders of magnitude higher than the background plasma density. Cusp singularitiessituated at the joining of two fold singularities, the cavity wall and the bow wave[2]front, emit bright coherent x-ray beams [3]-[5] (Fig. 1)with the estimated peak spectral brightness up to ~1027 photons/mm2 mrad2 s in 0.1% bandwidth, which is among the highest amongst the laser-based sources. Simulations with the PIC REMP code[6] predict pulse trains with the duration of 170 attosecondswithin the bandwidth of aperiodic multilayer mirrors [7],[8]which can preserve or control the attosecond pulse shape[9].
In this presentation we describe properties of the BISER coherent attosecond x-ray source derived from our experiments and PIC simulations.We also discuss requirements [10] of the driving laser [11],[12]for efficient x-ray generation using this mechanism.
telSÏJ^A Coherentx^ays
Relativistic plasma
le jet
Fig.l. Experiment schematic and typical XUV harmonic comb generated by the BISER mechanism. References
[1] A. S. Pirozhkov, et al. 2017 Scientific Reports 7, 17968.
[2] T. Zh. Esirkepov, et al.2008 Physical Review Letters 101 (26) 265001.
[3] A. S. Pirozhkov, et al. 2012 Physical Review Letters 108 (13) 135004.
[4] T.A. Pikuz et al. 2012 Physica Status Solidi C 9 (12) 2331.
[5] A. S. Pirozhkov, et al. 2014 New Journal of Physics 16 (9) 093003.
[6] T. Zh. Esirkepov 2001 Computer Physics Communications135 (2) 144.
[7] N. N. Kolachevsky, et al. 2000 Quantum Electronics 30 (5) 428.
[8] A. S. Pirozhkov and E. N. Ragozin 2015 Physics-Uspekhi 58 (11) 1095.
[9] I. L. Beigman, et al. 2001 JETP Letters 74 (3) 149.
[10] A. S. Pirozhkov, et al. 2018 Quantum Beam Science 2, 7.
[11] A. S. Pirozhkov, et al. 2017 Optics Express 25 (17) 20486.
[12] H. Kiriyama, et al. 2018 Optics Letters 43 (11) 2595.
