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Proceedings Paper

Real Time Laser Damage Detection In Bulk Materials By Strehl Intensities
Author(s): B. W. Mullins; A. B. Romberger
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Paper Abstract

Real time detection and measurement of laser-induced damage in bulk polymethyl-methacrylate (PMMA) has been achieved by use of a Strehl intensity detector. PMMA was damaged using a pulsed Nd:YAG laser, λ = 1.06 um and tp = 8 ± 2 nsec (FWHM). A cw HeNe laser probe beam was aligned to propagate collinearly with the Nd:YAG laser beam and come to a focus at approximately the same place in the PMMA sample. The HeNe laser beam's intensity was measured with a Strehl detector and recorded on a strip chart recorder. The steady state Strehl intensity detected the presence and diameter of laser. induced damage sites within + 4.5 um over a 2 um to 20 um array of damage site diameters.

Paper Details

Date Published: 20 November 1985
PDF: 6 pages
Proc. SPIE 0540, Southwest Conf on Optics '85, (20 November 1985); doi: 10.1117/12.976150
Show Author Affiliations
B. W. Mullins, US Air Force Academy (United States)
A. B. Romberger, US Air Force Academy (United States)

Published in SPIE Proceedings Vol. 0540:
Southwest Conf on Optics '85
Susanne C. Stotlar, Editor(s)

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