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Title: Saturated output tabletop x-ray lasers

Abstract

The high efficiency method of transient collisional excitation has been successfully demonstrated for Ne-like and Ni-like ion x-ray laser schemes with small 5-10 J laser facilities. Our recent studies using the tabletop COMET (Compact Multipulse Terawatt) laser system at the Lawrence Livermore National Laboratory (LLNL) have produced several x-ray lasers operating in the saturation regime. Output energy of 10-15 {micro}J corresponding to a gL product of 18 has been achieved on the Ni-like Pd 4d {yields} 4p transition at 147 {angstrom} with a total energy of 5-7 J in a 600 ps pulse followed by a 1.2 ps pulse. Analysis of the laser beam angular profile indicates that refraction plays an important role in the amplification and propagation process in the plasma column. We report further improvement in the extraction efficiency by varying a number of laser driver parameters. In particular, the duration of the second short pulse producing the inversion has an observed effect on the x-ray laser output.

Authors:
; ; ; ; ; ; ;
Publication Date:
Research Org.:
Lawrence Livermore National Lab., CA (US)
Sponsoring Org.:
US Department of Energy (US)
OSTI Identifier:
15005760
Report Number(s):
UCRL-JC-138709
Journal ID: ISSN 1155--4339; TRN: US0305660
DOE Contract Number:  
W-7405-ENG-48
Resource Type:
Conference
Resource Relation:
Journal Volume: 11; Journal Issue: PR2; Conference: 7th International Conference on X-Ray Lasers, Saint-Malo (FR), 06/18/2000--06/23/2000; Other Information: PBD: 1 Dec 2000
Country of Publication:
United States
Language:
English
Subject:
70 PLASMA PHYSICS AND FUSION TECHNOLOGY; 71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; 74 ATOMIC AND MOLECULAR PHYSICS; AMPLIFICATION; COMETS; EFFICIENCY; EXCITATION; LASERS; LAWRENCE LIVERMORE NATIONAL LABORATORY; PLASMA; REFRACTION; SATURATION; TRANSIENTS; X-RAY LASERS

Citation Formats

Dunn, J, Osterheld, A L, Nilsen, J, Hunter, J R, Li, Y, Faenov, A Ya, Pikuz, T A, and Shlyaptsev, N. Saturated output tabletop x-ray lasers. United States: N. p., 2000. Web. doi:10.1051/jp4:2001203.
Dunn, J, Osterheld, A L, Nilsen, J, Hunter, J R, Li, Y, Faenov, A Ya, Pikuz, T A, & Shlyaptsev, N. Saturated output tabletop x-ray lasers. United States. doi:10.1051/jp4:2001203.
Dunn, J, Osterheld, A L, Nilsen, J, Hunter, J R, Li, Y, Faenov, A Ya, Pikuz, T A, and Shlyaptsev, N. Fri . "Saturated output tabletop x-ray lasers". United States. doi:10.1051/jp4:2001203. https://www.osti.gov/servlets/purl/15005760.
@article{osti_15005760,
title = {Saturated output tabletop x-ray lasers},
author = {Dunn, J and Osterheld, A L and Nilsen, J and Hunter, J R and Li, Y and Faenov, A Ya and Pikuz, T A and Shlyaptsev, N},
abstractNote = {The high efficiency method of transient collisional excitation has been successfully demonstrated for Ne-like and Ni-like ion x-ray laser schemes with small 5-10 J laser facilities. Our recent studies using the tabletop COMET (Compact Multipulse Terawatt) laser system at the Lawrence Livermore National Laboratory (LLNL) have produced several x-ray lasers operating in the saturation regime. Output energy of 10-15 {micro}J corresponding to a gL product of 18 has been achieved on the Ni-like Pd 4d {yields} 4p transition at 147 {angstrom} with a total energy of 5-7 J in a 600 ps pulse followed by a 1.2 ps pulse. Analysis of the laser beam angular profile indicates that refraction plays an important role in the amplification and propagation process in the plasma column. We report further improvement in the extraction efficiency by varying a number of laser driver parameters. In particular, the duration of the second short pulse producing the inversion has an observed effect on the x-ray laser output.},
doi = {10.1051/jp4:2001203},
journal = {},
issn = {1155--4339},
number = PR2,
volume = 11,
place = {United States},
year = {2000},
month = {12}
}

Conference:
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