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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Vol. 35, Iss. 25 — Sep. 1, 1996
  • pp: 5059–5066

Substrate effects on absorption of coated surfaces

P. Roche, M. Commandré, L. Escoubas, J. P. Borgogno, G. Albrand, and B. Lazaridès  »View Author Affiliations


Applied Optics, Vol. 35, Issue 25, pp. 5059-5066 (1996)
http://dx.doi.org/10.1364/AO.35.005059


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Abstract

Photothermal deflection is used for mapping the absorption of bare and coated surfaces. The same area is mapped before and after coating and also after annealing. The great importance of the substrate with respect to the total losses of the coated component is emphasized. First the influence of surface contamination of the bare substrate on the total absorption of the coated substrate is studied for BK7 and fused-silica substrates. Then the mean value of the coated-substrate absorptance is shown to be strongly dependent on the type of substrate. Experimental results show that this effect is associated with a localization of the absorption at the near surface of the substrate and at the interfaces of the film.

© 1996 Optical Society of America

History
Original Manuscript: November 27, 1995
Revised Manuscript: February 21, 1996
Published: September 1, 1996

Citation
P. Roche, M. Commandré, L. Escoubas, J. P. Borgogno, G. Albrand, and B. Lazaridès, "Substrate effects on absorption of coated surfaces," Appl. Opt. 35, 5059-5066 (1996)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-35-25-5059

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