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Proceedings Paper

Application Of High-Speed Photography To Time-Resolved Wavefront Measurement
Author(s): D. R. Neal; W. C. Sweatt; W. J. Alford; D. A. McArthur; G. N. Hays
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Paper Abstract

For long-pulse (150 microseconds), side-pumped lasers, such as dye or reactor-pumped lasers, a significant transverse index gradient can develop. In order to design an appropriate laser resonator for efficient power extraction, a detailed space- and time-resolved determination of the index perturbation is required. We have applied high-speed photography to the measurement of wavefront errors in a pulsed laser gain region using a fast framing camera. We utilized both a derivative of a Hartmann test technique and a shearing interferometer, with good agreement between the two. The measured wavefronts have a predominantly parabolic index shape except near the walls, with a roughly linear time dependence during the pumping pulse.

Paper Details

Date Published: 4 February 1988
PDF: 5 pages
Proc. SPIE 0832, High Speed Photography, Videography, and Photonics V, (4 February 1988); doi: 10.1117/12.942208
Show Author Affiliations
D. R. Neal, Sandia National Laboratories (United States)
W. C. Sweatt, Sandia National Laboratories (United States)
W. J. Alford, Sandia National Laboratories (United States)
D. A. McArthur, Sandia National Laboratories (United States)
G. N. Hays, Sandia National Laboratories (United States)

Published in SPIE Proceedings Vol. 0832:
High Speed Photography, Videography, and Photonics V
Howard C. Johnson, Editor(s)

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