Advances in collisionally pumped optical-field-ionization soft x-ray lasers

Tomas Mocek; Stephane Sebban; L. M. Upcraft; I. Bettaibi; Philippe Balcou; G. Grillon; Bedrich Rus; David Ros; Annie Klisnick; Antoine Carillon; Gerard Jamelot; J. F. Wyart

doi:10.1117/12.504757

19 December 2003 Advances in collisionally pumped optical-field-ionization soft x-ray lasers

Tomas Mocek, Stephane Sebban, L. M. Upcraft, I. Bettaibi, Philippe Balcou, G. Grillon, Bedrich Rus, David Ros, Annie Klisnick, Antoine Carillon, Gerard Jamelot, J. F. Wyart

Author Affiliations +

Proceedings Volume 5197, Soft X-Ray Lasers and Applications V; (2003) https://doi.org/10.1117/12.504757
Event: Optical Science and Technology, SPIE's 48th Annual Meeting, 2003, San Diego, California, United States

Abstract

We give an overview of recent results on optical-field-ionization collisional soft X-ray lasers developed at LOA. By focusing a 30-fs, circularly polarized Ti-sapphire laser pulse at an intensity of up to 8 x 10¹⁷ Wcm^-2into a low-density gas cell containing xenon or krypton, we produced a few mm long plasma column for soft X-ray amplifier. Saturated amplification has been achieved on the 4d⁹5d(¹S₀) - 4d⁹5p(¹P₁) transition at 41.8 nm in Pd-like Xe, and strong lasing at 32.8 nm on the 3d⁹4d(¹S₀) - 3d⁹4p(¹P₁) transition in Ni-like Kr has been demonstrated. Under optimum pumping conditions the Xe IX laser provides about 5 x 109 photons per pulse while the Kr IX laser delivers up to (2-3) x 10⁹ photons per shot. The repetition rate of these X-ray lasers is 10 Hz. The experimental results are discussed and compared to computational simulations in which issues related to plasma formation, electron energy distribution, and atomic processes are addressed.

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Tomas Mocek, Stephane Sebban, L. M. Upcraft, I. Bettaibi, Philippe Balcou, G. Grillon, Bedrich Rus, David Ros, Annie Klisnick, Antoine Carillon, Gerard Jamelot, and J. F. Wyart "Advances in collisionally pumped optical-field-ionization soft x-ray lasers", Proc. SPIE 5197, Soft X-Ray Lasers and Applications V, (19 December 2003); https://doi.org/10.1117/12.504757

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