Sol–gel based anti-reflection coatings on wedged laser rods using a spin coater |
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| Authors: | R. Pareek A. S. Joshi P. D. Gupta P. K. Biswas S. Das |
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| Affiliation: | a Laser Plasma Division, Centre for Advanced Technology, Indore 452 013, India;b Sol–gel Division, Central Glass & Ceramic Research Institute, Kolkata 700 032, India |
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| Abstract: | Anti-reflection (AR) sol–gel coatings are deposited on wedge glass optics for high-power lasers using spin coating technique. Characterization of these coatings on BK-7 glass substrates is carried out in terms of thickness profile across the surface, thickness variation w.r.t. wedge angle, and its effect on AR coating reflectivity, at different wedge angles from 1° to 7°. Results of the study are used to deposit AR coatings on inclined end faces of Nd:phosphate glass laser rods. |
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| Keywords: | Sol– gel AR coatings Spin coater Laser rods |
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