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Esirkepov TZ, Bulanov SV. Luminal mirror. Phys Rev E 2024; 109:L023202. [PMID: 38491701 DOI: 10.1103/physreve.109.l023202] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2023] [Accepted: 01/26/2024] [Indexed: 03/18/2024]
Abstract
When a refractive index modulation of dispersive medium moves at the speed of light in vacuum, an incident electromagnetic wave, depending on its frequency, either is totally transmitted with a phase shift, or forms a standing wave, or is totally reflected with the frequency upshift. The luminal mirror converts a short incident pulse into a wave packet with an infinitely growing in time local frequency near the interface and with an energy spectral density that asymptotically is the inverse square of frequency. If the modulation disappears, the high frequency radiation is released.
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Affiliation(s)
- T Z Esirkepov
- Kansai Institute for Photon Science, National Institutes for Quantum and Radiological Science and Technology (QST), 8-1-7 Umemidai, Kizugawa, Kyoto 619-0215, Japan
| | - S V Bulanov
- Kansai Institute for Photon Science, National Institutes for Quantum and Radiological Science and Technology (QST), 8-1-7 Umemidai, Kizugawa, Kyoto 619-0215, Japan
- Extreme Light Infrastructure ERIC, ELI-Beamlines Facility, Za Radnici 835, Dolni Brezany 25241, Czech Republic
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Mu J, Esirkepov TZ, Valenta P, Gu Y, Jeong TM, Pirozhkov AS, Koga JK, Kando M, Korn G, Bulanov SV. Relativistic flying forcibly oscillating reflective diffraction grating. Phys Rev E 2020; 102:053202. [PMID: 33327116 DOI: 10.1103/physreve.102.053202] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2020] [Accepted: 10/08/2020] [Indexed: 11/07/2022]
Abstract
Relativistic flying forcibly oscillating reflective diffraction gratings are formed by an intense laser pulse (driver) in plasma. The mirror surface is an electron density singularity near the joining area of the wake wave cavity and the bow wave; it moves together with the driver laser pulse and undergoes forced oscillations induced by the field. A counterpropagating weak laser pulse (source) is incident at grazing angles, being efficiently reflected and enriched by harmonics. The reflected spectrum consists of the source pulse base frequency and its harmonics, multiplied by a large factor due to the double Doppler effect.
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Affiliation(s)
- Jie Mu
- ELI Beamlines Project, Institute of Physics of the ASCR, Na Slovance 2, 18221 Prague, Czech Republic
| | - Timur Zh Esirkepov
- Kansai Photon Science Institute, National Institutes for Quantum and Radiological Science and Technology, 8-1-7 Umemidai, Kizugawa, Kyoto 619-0215, Japan
| | - Petr Valenta
- ELI Beamlines Project, Institute of Physics of the ASCR, Na Slovance 2, 18221 Prague, Czech Republic.,Faculty of Nuclear Sciences and Physical Engineering, Czech Technical University in Prague, Brehova 7, 11519 Prague, Czech Republic
| | - Yanjun Gu
- ELI Beamlines Project, Institute of Physics of the ASCR, Na Slovance 2, 18221 Prague, Czech Republic
| | - Tae Moon Jeong
- ELI Beamlines Project, Institute of Physics of the ASCR, Na Slovance 2, 18221 Prague, Czech Republic
| | - Alexander S Pirozhkov
- Kansai Photon Science Institute, National Institutes for Quantum and Radiological Science and Technology, 8-1-7 Umemidai, Kizugawa, Kyoto 619-0215, Japan
| | - James K Koga
- Kansai Photon Science Institute, National Institutes for Quantum and Radiological Science and Technology, 8-1-7 Umemidai, Kizugawa, Kyoto 619-0215, Japan
| | - Masaki Kando
- Kansai Photon Science Institute, National Institutes for Quantum and Radiological Science and Technology, 8-1-7 Umemidai, Kizugawa, Kyoto 619-0215, Japan
| | - Georg Korn
- ELI Beamlines Project, Institute of Physics of the ASCR, Na Slovance 2, 18221 Prague, Czech Republic
| | - Sergei V Bulanov
- ELI Beamlines Project, Institute of Physics of the ASCR, Na Slovance 2, 18221 Prague, Czech Republic.,Kansai Photon Science Institute, National Institutes for Quantum and Radiological Science and Technology, 8-1-7 Umemidai, Kizugawa, Kyoto 619-0215, Japan
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Turnbull D, Franke P, Katz J, Palastro JP, Begishev IA, Boni R, Bromage J, Milder AL, Shaw JL, Froula DH. Ionization Waves of Arbitrary Velocity. PHYSICAL REVIEW LETTERS 2018; 120:225001. [PMID: 29906187 DOI: 10.1103/physrevlett.120.225001] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/20/2018] [Revised: 04/27/2018] [Indexed: 06/08/2023]
Abstract
Flying focus is a technique that uses a chirped laser beam focused by a highly chromatic lens to produce an extended focal region within which the peak laser intensity can propagate at any velocity. When that intensity is high enough to ionize a background gas, an ionization wave will track the intensity isosurface corresponding to the ionization threshold. We report on the demonstration of such ionization waves of arbitrary velocity. Subluminal and superluminal ionization fronts were produced that propagated both forward and backward relative to the ionizing laser. All backward and all superluminal cases mitigated the issue of ionization-induced refraction that typically inhibits the formation of long, contiguous plasma channels.
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Affiliation(s)
- D Turnbull
- University of Rochester Laboratory for Laser Energetics, 250 E River Rd., Rochester, New York 14623, USA
| | - P Franke
- University of Rochester Laboratory for Laser Energetics, 250 E River Rd., Rochester, New York 14623, USA
- University of Rochester Department of Physics & Astronomy, B&L Hall, Rochester, New York 14627, USA
| | - J Katz
- University of Rochester Laboratory for Laser Energetics, 250 E River Rd., Rochester, New York 14623, USA
- University of Rochester Institute of Optics, 480 Intercampus Drive, Rochester, New York 14627, USA
| | - J P Palastro
- University of Rochester Laboratory for Laser Energetics, 250 E River Rd., Rochester, New York 14623, USA
- University of Rochester Institute of Optics, 480 Intercampus Drive, Rochester, New York 14627, USA
| | - I A Begishev
- University of Rochester Laboratory for Laser Energetics, 250 E River Rd., Rochester, New York 14623, USA
- University of Rochester Institute of Optics, 480 Intercampus Drive, Rochester, New York 14627, USA
| | - R Boni
- University of Rochester Laboratory for Laser Energetics, 250 E River Rd., Rochester, New York 14623, USA
- University of Rochester Institute of Optics, 480 Intercampus Drive, Rochester, New York 14627, USA
| | - J Bromage
- University of Rochester Laboratory for Laser Energetics, 250 E River Rd., Rochester, New York 14623, USA
- University of Rochester Institute of Optics, 480 Intercampus Drive, Rochester, New York 14627, USA
| | - A L Milder
- University of Rochester Laboratory for Laser Energetics, 250 E River Rd., Rochester, New York 14623, USA
- University of Rochester Department of Physics & Astronomy, B&L Hall, Rochester, New York 14627, USA
| | - J L Shaw
- University of Rochester Laboratory for Laser Energetics, 250 E River Rd., Rochester, New York 14623, USA
| | - D H Froula
- University of Rochester Laboratory for Laser Energetics, 250 E River Rd., Rochester, New York 14623, USA
- University of Rochester Department of Physics & Astronomy, B&L Hall, Rochester, New York 14627, USA
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