Laser requirements for high-order harmonic generation by relativistic plasma singularities

0501697 - FZÚ 2019 RIV CH eng J - Článek v odborném periodiku
Pirozhkov, A.S. - Esirkepov, T.Z. - Pikuz, T. A. - Faenov, A.Ya. - Sagisaka, A. - Ogura, K. - Hayashi, Y. - Kotaki, H. - Ragozin, E.N. - Neely, D. - Koga, J.K. - Fukuda, Y. - Nishikino, M. - Imazono, T. - Hasegawa, N. - Kawachi, T. - Daido, H. - Kato, Y. - Bulanov, Sergey V. - Kondo, K. - Kiriyama, H. - Kando, M.
Laser requirements for high-order harmonic generation by relativistic plasma singularities.
Quantum Beam Science. Roč. 2, č. 7 (2018), s. 1-11. E-ISSN 2412-382X
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: high-power femtosecond lasers * high-power laser quality * relativistic laser plasma * relativistic plasma singularities * coherent X-ray generation
Obor OECD: Fluids and plasma physics (including surface physics)

We discuss requirements on relativistic-irradiance (I0 > 1018 W/cm2) high-power (multi-terawatt) ultrashort (femtosecond) lasers for efficient generation of high-order harmonics in gas jet targets in a new regime discovered recently (Pirozhkov et al., 2012). Here, we present the results of several experimental campaigns performed with different irradiances, analyse the obtained results and derive the required laser parameters. In particular, we found that the root mean square (RMS) wavefront error should be smaller than ~100 nm (~l/8). Further, the angular dispersion should be kept considerably smaller than the diffraction divergence, i.e., rad level for 100–300-mm beam diameters.
Trvalý link: http://hdl.handle.net/11104/0293692