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Journal of the Optical Society of Korea

Journal of the Optical Society of Korea


  • Vol. 10, Iss. 2 — Jun. 25, 2006
  • pp: 57–62

A Cooled Deformable Bimorph Mirror for a High Power Laser

Jun-Ho Lee, Young-Cheol Lee, and Eung-Cheol Kang  »View Author Affiliations

Journal of the Optical Society of Korea, Vol. 10, Issue 2, pp. 57-62 (2006)

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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.

© 2006 Optical Society of Korea

OCIS Codes
(010.1080) Atmospheric and oceanic optics : Active or adaptive optics
(140.0140) Lasers and laser optics : Lasers and laser optics
(140.3320) Lasers and laser optics : Laser cooling
(230.4040) Optical devices : Mirrors

Original Manuscript: April 18, 2006
Revised Manuscript: April 18, 2006
Published: June 1, 2006

Jun-Ho Lee, Young-Cheol Lee, and Eung-Cheol Kang, "A Cooled Deformable Bimorph Mirror for a High Power Laser," J. Opt. Soc. Korea 10, 57-62 (2006)

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