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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Vol. 43, Iss. 13 — May. 1, 2004
  • pp: 2670–2679

Mechanical Characteristics of Optical Coatings Prepared by Various Techniques: A Comparative Study

Jolanta E. Klemberg-Sapieha, Jörg Oberste-Berghaus, Ludvik Martinu, Richard Blacker, Ian Stevenson, George Sadkhin, Dale Morton, Scott McEldowney, Robert Klinger, Phil J. Martin, Nadia Court, Svetlana Dligatch, Mark Gross, and Roger P. Netterfield  »View Author Affiliations


Applied Optics, Vol. 43, Issue 13, pp. 2670-2679 (2004)
http://dx.doi.org/10.1364/AO.43.002670


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Abstract

Good performance of optical coatings depends on the appropriate combination of optical and mechanical properties. Therefore, successful applications require good understanding of the relationship between optical microstructural and mechanical characteristics and film stability. In addition, there is a lack of standard mechanical tests that allow one to compare film properties measured in different laboratories. We give an overview of the methodology of mechanical measurements suitable for optical coatings; this includes depth-sensing indentation, scratch resistance, friction, abrasion and wear testing, and stress and adhesion evaluation. We used the techniques mentioned above in the same laboratory to systematically compare the mechanical behavior of frequently used high- and low-index materials, namely, TiO2, Ta2O5, and SiO2, prepared by different complementary techniques. They include ion-beam-assisted deposition by electron-beam evaporation, magnetron sputtering, dual-ion-beam sputtering, plasma-enhanced chemical-vapor deposition, and filtered cathodic arc deposition. The mechanical properties are correlated with the film microstructure that is inherently related to energetic conditions during film growth.

© 2004 Optical Society of America

OCIS Codes
(160.4670) Materials : Optical materials
(310.0310) Thin films : Thin films
(310.6870) Thin films : Thin films, other properties

Citation
Jolanta E. Klemberg-Sapieha, Jörg Oberste-Berghaus, Ludvik Martinu, Richard Blacker, Ian Stevenson, George Sadkhin, Dale Morton, Scott McEldowney, Robert Klinger, Phil J. Martin, Nadia Court, Svetlana Dligatch, Mark Gross, and Roger P. Netterfield, "Mechanical Characteristics of Optical Coatings Prepared by Various Techniques: A Comparative Study," Appl. Opt. 43, 2670-2679 (2004)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-43-13-2670

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