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Proceedings Paper

Transient collisional excitation x-ray laser experiments on the P102 laser at CEA-LV
Author(s): Jean-Luc Miquel; Nathalie Blanchot; Laurence Bonnet; Sylvie Jacquemot; Annie Klisnick; Jaroslav Kuba; David Ros; P. Fourcade; Gerard Jamelot; Fabien Dorchies; Jean-Christophe Chanteloup
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Paper Abstract

Recent experiments, performed at the C.E.A./Limeil-Valenton P102 laser facility on the Ni-like transient collisional scheme, are reported in this paper. They mainly aimed at enhancing the efficiency and improving the optical properties of the already demonstrated 4d J equals 0/4p J equals 1 Ag19+ x-ray laser at 13.9 nm. The now classical 2- stage traveling-wave irradiation of slab targets was used, the illumination sequence being constituted of a long (600 ps) low-flux (0.5 - 11 J) laser pulse followed (200 ps later) by a short (< 1 ps) high intensity (1 - 20 J) one. The work novelty was the use of frequency-doubled pulses, either for the pre-forming or the pumping one. Various combinations ((omega) -(omega) , 2(omega) -(omega) , (omega) - 2(omega) ) have been investigated in terms of lasing performances. High gains, around 34/cm, have been measured and saturation achieved for target lengths above 4 mm. A strong enhancement, up to a few (mu) J, of the x-ray laser output has been observed, due to traveling-wave irradiation method, while the emission duration was decreased to less than 10 ps, resulting in a 300 kW source. Moreover, under specific laser conditions, a second lasing line at 16 nm was detected. Finally, the possibility of cavity operating transient collisional x-ray lasers has been demonstrated.

Paper Details

Date Published: 21 October 1999
PDF: 13 pages
Proc. SPIE 3776, Soft X-Ray Lasers and Applications III, (21 October 1999); doi: 10.1117/12.366684
Show Author Affiliations
Jean-Luc Miquel, CEA Limeil-Valenton (France)
Nathalie Blanchot, CEA Limeil-Valenton (France)
Laurence Bonnet, CEA Limeil-Valenton (France)
Sylvie Jacquemot, CEA Limeil-Valenton (France)
Annie Klisnick, Univ. de Paris-Sud (France)
Jaroslav Kuba, Univ. de Paris-Sud (United States)
David Ros, Univ. de Paris-Sud (France)
P. Fourcade, Univ. de Paris-Sud (France)
Gerard Jamelot, Univ. de Paris-Sud (France)
Fabien Dorchies, INRS (France)
Jean-Christophe Chanteloup, Ecole Polytechnique (France)

Published in SPIE Proceedings Vol. 3776:
Soft X-Ray Lasers and Applications III
Jorge J. G. Rocca; Luiz Barroca Da Silva, Editor(s)

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