Real-time detection of laser damage threshold of AR coating of high-power optics

Azad Siahmakoun; Paul W. Southard

doi:10.1117/12.216854

18 August 1995 Real-time detection of laser damage threshold of AR coating of high-power optics

Azad Siahmakoun, Paul W. Southard

Proceedings Volume 2622, Optical Engineering Midwest '95; (1995) https://doi.org/10.1117/12.216854
Event: Optical Engineering Midwest '95, 1995, Chicago, IL, United States

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.

Citation Download Citation

Azad Siahmakoun and Paul W. Southard "Real-time detection of laser damage threshold of AR coating of high-power optics", Proc. SPIE 2622, Optical Engineering Midwest '95, (18 August 1995); https://doi.org/10.1117/12.216854

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