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http://dx.doi.org/10.3807/JOSK.2006.10.2.057

A Cooled Deformable Bimorph Mirror for a High Power Laser  

Lee Jun-Ho (Dept. of Optical Engineering, Kongju National University)
Lee Young-Cheol (Agency for Defense Development)
Kang Eung-Cheol (Agency for Defense Development)
Publication Information
Journal of the Optical Society of Korea / v.10, no.2, 2006 , pp. 57-62 More about this Journal
Abstract
Adaptive optics (AO) has been applied in various fields including astronomy, ophthalmology and high power laser systems. An adaptive optics system for a high power laser is not significantly different from other AO systems in the point of configuration except that high energy absorbed by the deformable mirror distorts the deformable mirror surface and so degrades system performance. Currently we are researching a bimorph deformable mirror for beam cleaning of a high power class laser. The bimorph mirror was considered to have 99% reflective coating and 1% absorption. So this paper first presents the temperature profiles and corresponding thermal distortions of the bimorph mirror faceplate when the mirror is under a high power lasing for 10 seconds. The analysis was accomplished by the use of finite difference and finite element computer programs to generate the element arrays, calculate the temperature profiles, and determine the structural deformations. Then this paper proposes an 'embedded wafer' type water-cooling system with derived cooling parameters.
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Times Cited By KSCI : 2  (Citation Analysis)
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