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Proceedings Paper

Chirped-pulse amplification with flashlamp-pumped Ti:sapphire amplifiers
Author(s): James D. Bonlie; William E. White; Dwight F. Price; David H. Reitze
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Paper Abstract

Ti:Sapphire (Ti:Al2O3) amplifier stages are typically pumped with Q-switched Nd:YAG lasers doubled to 532 nm because of good spectral overlap, short temporal width, high repetition rate (i.e., 10 Hz to > 5 kHz), and the problems associated with flashlamp pumping a material with a relatively short upper state lifetime. Limitations to this pumping method arise due to the 1 to 1.5 joule/pulse ceiling found in most commercial high rep rate Nd:YAG lasers. The availability of high quality, large aperture Ti:Sapphire rods has made the flashlamp-pumping scheme an attractive option. The front end of our laser relies on chirped pulse amplification (CPA) in laser pumped Ti:Sapphire to generate 55 mJ, 90 fsec pulses at a 10 Hz rate. We report the use of a flashlamp pumped Ti:Sapphire head to further amplify the output of our system, producing 90 fsec, 250 mJ pulses at 5 Hz. The excellent output spatial profile yields a near diffraction-limited 5 micrometers spot size and peak irradiance in excess of 5 X 1018 W/cm2.

Paper Details

Date Published: 16 May 1994
PDF: 11 pages
Proc. SPIE 2116, Generation, Amplification, and Measurement of Ultrashort Laser Pulses, (16 May 1994); doi: 10.1117/12.175867
Show Author Affiliations
James D. Bonlie, Lawrence Livermore National Lab. (United States)
William E. White, Lawrence Livermore National Lab. (United States)
Dwight F. Price, Lawrence Livermore National Lab. (United States)
David H. Reitze, Lawrence Livermore National Lab. (United States)

Published in SPIE Proceedings Vol. 2116:
Generation, Amplification, and Measurement of Ultrashort Laser Pulses
Rick P. Trebino; Ian A. Walmsley, Editor(s)

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