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Proceedings Paper

Characterization of a subpicosecond XeF (C->A) excimer laser
Author(s): Thomas Hofmann; Tracy S. Sharp; C. Brent Dane; P. Jeffrey Wisoff; William L. Wilson Jr.; Frank K. Tittel; Gabor Szabo
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Paper Abstract

The electron-beam pumped XeF(C yields A) excimer has been investigated as a novel gain medium for ultrashort pulse, high power amplification in the visible spectral region over a wide range of laser pulse durations. Gain measurements for 100 ps and 800 fs pulses resulted in a small signal gain coefficient of 3%/cm and a saturation energy density of 80 mJ/cm2. For 250 fs pulses, a saturation energy density of 50 mJ/cm2 was observed. Narrowband absorbers in the XeF(C yields A) spectrum could be bleached out, yielding a smooth gain profile of 60 nm bandwidth. An unstable resonator was designed with particular consideration of the small XeF(C yields A) gain coefficient and optimized energy extraction in a single pulse output. A maximum pulse energy of 275 mJ was obtained by amplification of 250 fs pulses at 490 nm wavelength, generating laser powers in the terawatt range. The beam quality of the amplified pulses was within 1.3 times the diffraction limit, making possible focused intensities in the 1018 W/cm2 range.

Paper Details

Date Published: 1 May 1991
PDF: 7 pages
Proc. SPIE 1412, Gas and Metal Vapor Lasers and Applications, (1 May 1991); doi: 10.1117/12.43638
Show Author Affiliations
Thomas Hofmann, Rice Univ. (United States)
Tracy S. Sharp, Rice Univ. (United States)
C. Brent Dane, Rice Univ. (United States)
P. Jeffrey Wisoff, Rice Univ. (United States)
William L. Wilson Jr., Rice Univ. (United States)
Frank K. Tittel, Rice Univ. (United States)
Gabor Szabo, Jate Univ. (Hungary)

Published in SPIE Proceedings Vol. 1412:
Gas and Metal Vapor Lasers and Applications
Jin J. Kim; Frank K. Tittel, Editor(s)

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