14 May 2008 Development of diffractive antireflection structures on ZnSe for high power CO2 laser applications
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Abstract
The unavoidable absorption of thin films used in antireflective coatings forms a permanent bottleneck in the development of optics for high power laser applications. A valid alternative would be the micro-structuring of the optics surface, realizing a diffraction grating which emulates the functioning of an Anti-Reflection thin film layer. Due to the absence of film material, this diffractive structure would not contribute to the overall absorption of the optics. This paper investigates the practical limits of this strategy, applied to zinc selenide as low absorption infrared substrate material.
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Fabien Reversat, Fabien Reversat, Thierry Berthou, Thierry Berthou, Stéphane Tisserand, Stéphane Tisserand, Lionel Dupuy, Lionel Dupuy, Sophie Gautier, Sophie Gautier, Peter Muys, Peter Muys, Danae Delbeke, Danae Delbeke, David Grojo, David Grojo, Mohammed Laraichi, Mohammed Laraichi, Philippe Delaporte, Philippe Delaporte, } "Development of diffractive antireflection structures on ZnSe for high power CO2 laser applications", Proc. SPIE 6992, Micro-Optics 2008, 69920I (14 May 2008); doi: 10.1117/12.782633; https://doi.org/10.1117/12.782633
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