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Proceedings Paper

Laser Pulse Stretching Via Enhanced Closed Loop Control With Slow Q-Switching
Author(s): Jon Kyle Hawkins; William A. Williams
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Paper Abstract

In testing a holographic particle track recording system for the Fermilab 15 foot bubble chamber, it was shown that the peak power of Q-switched laser pulses (50ns duration) at the required energy gave rise to boiling during the chamber expansion. A pulse stretching technique is described which was developed to reduce the peak power. Applied to a ruby laser (oscillator and three amplifiers) with a maximum Q-switched output of 30J, pulses of up to 10-μs duration with coherence up to and exceeding 11 m at 2.5μs were produced. The considerably increased coherence length will find applications in many fields of pulsed holography, and its use with fiber optics is particularly promising.

Paper Details

Date Published: 14 July 1988
PDF: 10 pages
Proc. SPIE 0927, Wave Propagation and Scattering in Varied Media, (14 July 1988); doi: 10.1117/12.945836
Show Author Affiliations
Jon Kyle Hawkins, Fermi National Accelerator Laboratory (United States)
William A. Williams, Fermi National Accelerator Laboratory (United States)

Published in SPIE Proceedings Vol. 0927:
Wave Propagation and Scattering in Varied Media
Vasundara V. Varadan; Vijay K. Varadan, Editor(s)

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