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Journal of the Optical Society of Korea

Journal of the Optical Society of Korea

| PUBLISHED BY THE OPTICAL SOCIETY OF KOREA

  • Vol. 10, Iss. 1 — Mar. 25, 2006
  • pp: 23–27

A Circular Bimorph Deformable Mirror for Circular/Annulus/Square Laser Beam Compensation

J.H. Lee, Y.C. Lee, and H.J. Cheon  »View Author Affiliations


Journal of the Optical Society of Korea, Vol. 10, Issue 1, pp. 23-27 (2006)


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Abstract

We are studying the application of an adaptive optics system to upgrade the beam quality of a laser. The adaptive optics (AO) system consists of a bimorph deformable mirror, a Shack-Hartmann sensor and a control system. In most AO applications, the beam aperture is considered to be circular. However, in some cases such as laser beams from unstable resonators, the beam apertures are annulus or a holed-rectangle. In this paper, we investigate how well a bimorph deformable mirror of <TEX>${\Phi}120\;mm$</TEX> clear aperture can compensate phase distortions for three different beam configurations; 1) <TEX>${\Phi}120\;mm$</TEX> circular aperture, 2) <TEX>${\Phi}100\;mm$</TEX> annulus aperture with a <TEX>${\Phi}20\;mm$</TEX> hole and 3) <TEX>$70\;mm{\times}70\;mm$</TEX> square aperture with a hole of <TEX>$30\;mm{\times}30\;mm$</TEX>. This study concludes that the bimorph mirror, which might be considered as a modal controller, can compensate tilt, defocus, coma and astigmatism, and spherical aberration for all three beams.

© 2006 Optical Society of Korea

OCIS Codes
(010.1080) Atmospheric and oceanic optics : Active or adaptive optics
(120.5060) Instrumentation, measurement, and metrology : Phase modulation
(230.4040) Optical devices : Mirrors

History
Original Manuscript: February 13, 2006
Revised Manuscript: March 8, 2006
Published: March 1, 2006

Citation
J.H. Lee, Y.C. Lee, and H.J. Cheon, "A Circular Bimorph Deformable Mirror for Circular/Annulus/Square Laser Beam Compensation," J. Opt. Soc. Korea 10, 23-27 (2006)
http://www.opticsinfobase.org/josk/abstract.cfm?URI=josk-10-1-23


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