High repetition rate collisional soft x-ray lasers based on grazing incidence pumping Page: 3 of 44
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High repetition rate collisional soft x-ray lasers based on grazing
incidence pumping
B. M. Luther, Y. Wang, M. A. Larotonda, D. Alessi, M. Berrill, and J. J. Rocca
National Science Foundation ERC for Extreme Ultraviolet Science and Technology, and
Electrical and Computer Engineering Department, Colorado State University, Fort
Collins, CO 80523, USA
J. Dunn and R. Keenan
Lawrence Livermore National Laboratory, Livermore, California 94550, USA
V. N. Shlyaptsev
Department of Applied Science, University of California Davis-Livermore, Livermore,
California 94550, USA
Abstract
We discuss the demonstration of gain-saturated high repetition rate table-top soft
x-ray lasers producing microwatt average powers at wavelengths ranging from 13.9 to 33
nm. The results were obtained heating a pre-created plasma with a picosecond optical
laser pulse impinging at grazing incidence onto a pre-created plasma. This pumping
geometry increases the energy deposition efficiency of the pump beam into the gain
region, making it possible to saturate soft x-ray lasers in this wavelength range with a
short pulse pump energy of only 1 J at 800 nm wavelength. Results corresponding to 5
Hz repetition rate operation of gain-saturated 14.7 nm Ni-like Pd and 32.6 nm line Ne-
like Ti lasers pumped by a table-top Ti:sapphire laser are reported. We also discuss
results obtained using a lo 1054 nm pre-pulse and 2w 527 nm short pulse from a
Nd:glass pump laser. This work demonstrates the feasibility of producing compact high
average power soft x-ray lasers for applications.
Index terms: Soft x-ray laser, Nickel-like ions, Neon-like ions, Grazing incidence
pumping.I
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Luther, B. M.; Wang, Y.; Larotonda, M. A.; Alessi, D.; Berrill, M.; Rocca, J. J. et al. High repetition rate collisional soft x-ray lasers based on grazing incidence pumping, article, November 18, 2005; Livermore, California. (https://digital.library.unt.edu/ark:/67531/metadc881977/m1/3/: accessed April 17, 2024), University of North Texas Libraries, UNT Digital Library, https://digital.library.unt.edu; crediting UNT Libraries Government Documents Department.