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Proceedings Paper

Real-time detection of laser damage threshold of AR coating of high-power optics
Author(s): Azad Siahmakoun; Paul W. Southard
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Paper Abstract

A photorefractive dynamic Schlieren (PDS) system is designed to monitor the photothermal damage-threshold of ZrSiO2. The PDS is calibrated by observing the fringe movement in a Twyman-Green interferometer (TGI). While the phase changes due to optical path difference (OPD) of about (gamma) /10 are detectable by TGI, the PDS is capable of revealing intensity changes due to OPD of less than (gamma) /20. In this experiment a Nd:YAG laser is the source for photothermal phase change while a HeCd provides the Schlieren field.

Paper Details

Date Published: 18 August 1995
PDF: 6 pages
Proc. SPIE 2622, Optical Engineering Midwest '95, (18 August 1995); doi: 10.1117/12.216854
Show Author Affiliations
Azad Siahmakoun, Rose-Hulman Institute of Technology (United States)
Paul W. Southard, Rose-Hulman Institute of Technology (United States)

Published in SPIE Proceedings Vol. 2622:
Optical Engineering Midwest '95
Rudolph P. Guzik, Editor(s)

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