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Proceedings Paper

Commercial terawatt femtosecond laser-driven tabletop x-ray lasers in gases
Author(s): Peixiang Lu; Hidetoshi Nakano; Tadashi Nishikawa; Naoshi Uesugi
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Paper Abstract

Table-top x-ray lasers driven by a commercial terawatt (TW) femtosecond laser in gases such as N2, O2, SF6, and Kr are investigated. X-ray lasing to the ground state in low-charged nitrogen and oxygen ions is successfully demonstrated using a commercial TW femtosecond laser system by optical-field ionization. Small signal gain coefficients of 9.6 cm-1 for the NIII 3s(2S)-2p)2P) transition at 45.2 nm and 11.7 cm-1 for the OIII 2p3s(3P)-2p2(3P) transition at 37.4 nm x-ray lasers are achieved for a linearly-polarized 100-fs pump laser pulse of 25 mJ. Four models that includes the monopole collisional excitation and radiation trapping effects in neon-like S and nickel-like Kr ions were built and gains for neon-like S 3p-3s and nickel-like Kr 4d-4p transitions were calculated in SF6 and Kr gases with different gas pressures. Calculations yield positive prospects for table- top neon-like S and nickel-like Kr ion x-ray lasers driven by a 1-TW circularly-polarized 100-fs laser pulse.

Paper Details

Date Published: 11 January 2000
PDF: 12 pages
Proc. SPIE 3886, High-Power Lasers in Energy Engineering, (11 January 2000); doi: 10.1117/12.375121
Show Author Affiliations
Peixiang Lu, NTT Basic Research Labs. (Japan)
Hidetoshi Nakano, NTT Basic Research Labs. (Japan)
Tadashi Nishikawa, NTT Basic Research Labs. (Japan)
Naoshi Uesugi, NTT Basic Research Labs. (Japan)

Published in SPIE Proceedings Vol. 3886:
High-Power Lasers in Energy Engineering
Kunioki Mima; Gerald L. Kulcinski; William J. Hogan, Editor(s)

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