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Coherent, Short-Pulse X-ray Generation via Relativistic Flying Mirrors

1
Kansai Photon Science Institute, National Institutes for Quantum and Radiological Science and Technology, 8-1-7 Umemidai, Kizugawa, Kyoto 619-0215, Japan
2
Institute of Physics ASCR, v.v.i. (FZU), ELI-Beamlines Project, 18221 Prague, Czech Republic
*
Author to whom correspondence should be addressed.
These authors contributed equally to this work.
Quantum Beam Sci. 2018, 2(2), 9; https://doi.org/10.3390/qubs2020009
Received: 28 February 2018 / Revised: 13 April 2018 / Accepted: 13 April 2018 / Published: 24 April 2018
(This article belongs to the Special Issue Laser-driven Quantum Beams)
Coherent, Short X-ray pulses are demanded in material science and biology for the study of micro-structures. Currently, large-sized free-electron lasers are used; however, the available beam lines are limited because of the large construction cost. Here we review a novel method to downsize the system as well as providing fully (spatially and temporally) coherent pulses. The method is based on the reflection of coherent laser light by a relativistically moving mirror (flying mirror). Due to the double Doppler effect, the reflected pulses are upshifted in frequency and compressed in time. Such mirrors are formed when an intense short laser pulse excites a strongly nonlinear plasma wave in tenuous plasma. Theory, proof-of-principle, experiments, and possible applications are addressed. View Full-Text
Keywords: coherent X-rays; intense lasers; relativistic laser-plasma coherent X-rays; intense lasers; relativistic laser-plasma
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Kando, M.; Esirkepov, T.Z.; Koga, J.K.; Pirozhkov, A.S.; Bulanov, S.V. Coherent, Short-Pulse X-ray Generation via Relativistic Flying Mirrors. Quantum Beam Sci. 2018, 2, 9.

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