High density optical-field-ionization soft X-ray lasers

0522572 - FZÚ 2020 RIV CH eng C - Conference Paper (international conference)
Tissandier, F. - Sebban, S. - Kozlová, Michaela - Gautier, J. - Zeitoun, P. - Klisnick, A. - Maynard, G.
High density optical-field-ionization soft X-ray lasers.
X-Ray Lasers 2012: Proceedings of the 13th International Conference on X-Ray Lasers. Cham: Springer International Publishing, 2014 - (Sebban, S.; Gautier, J.; Ros, D.; Zeitoun, P.), s. 243-255. Springer Proceedings in Physics, 147. ISBN 978-3-319-00695-6. ISSN 0930-8989.
[International Conference on X-Ray Lasers (ICXRL)/13./. Paris (FR), 11.06.2012-15.06.2012]
Institutional support: RVO:68378271
Keywords : pump pulse * pump beam * plasma channel * pump field * capillary discharge
OECD category: Optics (including laser optics and quantum optics)

Generating an optical-field-ionization (OFI) collisional soft X-ray laser amplifier in a high density plasma would allow a significant increase of the saturation intensity, laser gain, and reduction of the emitted pulse duration. Due to strong refraction of the pump infrared beam in the plasma, guiding techniques have to be implemented. Using an optically preformed plasma waveguide, we successfully achieved guiding of J-energy pulses in a near-critical density krypton plasma with 50 % total transmission over 5 to 10 mm. X-ray lasing at 32.8 nm has also been demonstrated. This technique is a step towards OFI recombination soft X-ray lasers. This pumping scheme requires the production of a cold and dense plasma. We propose to pump a high density neon VIII plasma by a frequency doubled intense Ti:Sa laser. Guiding of the 405 nm pump pulse has already been achieved at LOA.

Permanent Link: http://hdl.handle.net/11104/0307043