Laser Pulse Stretching Via Enhanced Closed Loop Control With Slow Q-Switching

Jon Kyle Hawkins; William A. Williams

doi:10.1117/12.945836

14 July 1988 Laser Pulse Stretching Via Enhanced Closed Loop Control With Slow Q-Switching

Jon Kyle Hawkins, William A. Williams

Proceedings Volume 0927, Wave Propagation and Scattering in Varied Media; (1988) https://doi.org/10.1117/12.945836
Event: 1988 Technical Symposium on Optics, Electro-Optics, and Sensors, 1988, Orlando, FL, United States

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.

Citation Download Citation

Jon Kyle Hawkins and William A. Williams "Laser Pulse Stretching Via Enhanced Closed Loop Control With Slow Q-Switching", Proc. SPIE 0927, Wave Propagation and Scattering in Varied Media, (14 July 1988); https://doi.org/10.1117/12.945836

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