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Proceedings Paper

Thermal stresses field-induced by continuous wave laser irradiation of optical components
Author(s): Erik Duloisy; Jean DiJon
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Paper Abstract

As a consequence of optical absorption, the temperature of an optical component submitted to high power laser flux increases. The temperature field is known to be non uniform, this leads to a distribution of stresses which may damage the system for temperatures well below the melting point. Assuming linear, isotropic and homogeneous materials, thermal strains and stresses have been calculated in a semi infinite medium under an axisymmetric steady state distribution of temperature. Taking into account interfacial stresses, analytical expressions for the stress fields have been developed for a film bonded to a substrate and submitted to a long time laser irradiation. Last, the results are discussed and compared to observed degradation steps.

Paper Details

Date Published: 4 November 1994
PDF: 12 pages
Proc. SPIE 2253, Optical Interference Coatings, (4 November 1994); doi: 10.1117/12.192159
Show Author Affiliations
Erik Duloisy, CEA/LETI/CMO (France)
Jean DiJon, CEA/LETI/CMO (France)

Published in SPIE Proceedings Vol. 2253:
Optical Interference Coatings
Florin Abeles, Editor(s)

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