Electro-optic spatial decoding on the spherical-wavefront Coulomb fields of plasma electron sources

0494947 - FZÚ 2019 RIV GB eng J - Článek v odborném periodiku
Huang, K. - Esirkepov, T. - Koga, J.K. - Kotaki, H. - Mori, M. - Hayashi, Y. - Nakanii, N. - Bulanov, Sergey V. - Kando, M.
Electro-optic spatial decoding on the spherical-wavefront Coulomb fields of plasma electron sources.
Scientific Reports. Roč. 8, Feb (2018), s. 1-10, č. článku 2938. ISSN 2045-2322. E-ISSN 2045-2322
Grant CEP: GA MŠMT EF15_003/0000449
Grant ostatní: OP VVV - HiFi(XE) CZ.02.1.01/0.0/0.0/15_003/0000449
Institucionální podpora: RVO:68378271
Klíčová slova: laser * accelerator * beams * femtosecond * pulses
Obor OECD: Optics (including laser optics and quantum optics)
Impakt faktor: 4.011, rok: 2018

Detections of the pulse durations and arrival timings of relativistic electron beams are important issues in accelerator physics. Electro-optic diagnostics on the Coulomb fields of electron beams have the advantages of single shot and non-destructive characteristics. We present a study of introducing the electro-optic spatial decoding technique to laser wakefield acceleration. By placing an electro-optic crystal very close to a gas target, we discovered that the Coulomb field of the electron beam possessed a spherical wavefront and was inconsistent with the previously widely used model. The field structure was demonstrated by experimental measurement, analytic calculations and simulations. A temporal mapping relationship with generality was derived in a geometry where the signals had spherical wavefronts. This study could be helpful for the applications of electro-optic diagnostics in laser plasma acceleration experiments.
Trvalý link: http://hdl.handle.net/11104/0288002