Olaf Stenzel 2009 J. Phys. D: Appl. Phys. 42 055312 doi:10.1088/0022-3727/42/5/055312
Olaf Stenzel
Show affiliationsA simple model is presented that relates optical and mechanical properties of optical coating materials deposited by typical physical vapour deposition techniques to the porosity of the layers. In terms of this model, a clear correlation between thermal shift, mechanical stress and refractive index could be simulated. As a practical conclusion, it is found that a certain fraction of small nanosized pores in the films is essential in order to get a valuable balance between optical and mechanical coating properties.
62.25.-g Mechanical properties of nanoscale systems
61.43.Gt Powders, porous materials
78.67.-n Optical properties of low-dimensional, mesoscopic, and nanoscale materials and structures
Condensed matter: electrical, magnetic and optical
Surfaces, interfaces and thin films
Optics, quantum optics and lasers
Issue 5 (7 March 2009)
Received 1 December 2008, in final form 2 December 2008
Published 20 February 2009
Olaf Stenzel 2009 J. Phys. D: Appl. Phys. 42 055312
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