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Proceedings Paper

Heat transfer from localized absorbing defects to the host coating material in HfO2/SiO2 multilayer systems
Author(s): Semyon Papernov; Ansgar W. Schmid
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Paper Abstract

Finite-element analysis was applied in calculating the heat- transfer effects from localized absorbing defects to the host coating material in multilayer HfO2/SiO2 system, irradiated by 1-ns pulses. Thermoconductivity was considered the major heat-transfer mechanism. A comparison with high-resolution laser-damage morphology studies carried out by means of atomic-force microscopy allowed estimating peak temperatures reached by the absorbing defects. These peak-temperature values as well as the lateral length scales of the empirically found laser-damage features point toward the importance of radiative energy transfer from the heated defect as the driving mechanism of laser-damage initiation.

Paper Details

Date Published: 13 May 1997
PDF: 9 pages
Proc. SPIE 2966, Laser-Induced Damage in Optical Materials: 1996, (13 May 1997); doi: 10.1117/12.274258
Show Author Affiliations
Semyon Papernov, Univ. of Rochester (United States)
Ansgar W. Schmid, Univ. of Rochester (United States)

Published in SPIE Proceedings Vol. 2966:
Laser-Induced Damage in Optical Materials: 1996
Harold E. Bennett; Arthur H. Guenther; Mark R. Kozlowski; Brian Emerson Newnam; M. J. Soileau, Editor(s)

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