Transient pumping of a Ni-like Ag x-ray laser with a subpicosecond pump pulse in a traveling-wave irradiation geometry

A. Klisnick, P. Zeitoun, D. Ros, A. Carillon, P. Fourcade, S. Hubert, G. Jamelot, Ciaran Lewis, A.G. Mac Phee, R.M.N. O'Rourcke, Caroline Keenan, P.V. Nickles, K. Janulewicz, M. Kalashnikov, J. Warwick, J.C. Chanteloup, A. Migus, E. Salmon, C. Sauteret, J.P. Zou

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63 Citations (Scopus)

Abstract

We report what is to our knowledge the first demonstration of a transient x-ray laser pumped by a 350-fs pulse in a traveling-wave irradiation geometry. For a 500-fs pump pulse the traveling-wave irradiation was found to have a strong effect on enhancing the Ni-like silver 4d-4p lasing emission at 13.9 nm. The signal enhancement was significantly less when the pulse duration was lengthened to 1.7 ps. The experimental observations are well reproduced by a simple model when the duration of gain is taken of the order of 15-20 ps. For the 500-fs pulse a gain coefficient of 14.5 cm(-1) was measured for plasma lengths up to 7 mm. Refraction of the amplified photons is believed to be the main cause of the limitation of the effective amplification length. (C) 2000 Optical Society of America.
Original languageEnglish
Pages (from-to)1093-1097
Number of pages5
JournalJOURNAL OF THE OPTICAL SOCIETY OF AMERICA B-OPTICAL PHYSICS
Volume17
Issue number6
Publication statusPublished - Jun 2000

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics

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