Thermal deformable mirror

Carlos A. Caicedo; Allan Wirth; Greg LaRosa; Rob Coerver; John Wilt; Mike Taylor

doi:10.1117/12.672022

27 June 2006 Thermal deformable mirror

Carlos A. Caicedo, Allan Wirth, Greg LaRosa, Rob Coerver, John Wilt, Mike Taylor

Proceedings Volume 6272, Advances in Adaptive Optics II; 627252 (2006) https://doi.org/10.1117/12.672022
Event: SPIE Astronomical Telescopes + Instrumentation, 2006, Orlando, Florida , United States

Abstract

Beam correction of high power lasers often requires large wavefront deformations with very slow rates of change. Adaptive Optics Associates, Inc. (AOA) has developed a new type of deformable mirror in which thermal expansion of tubes control the mirror's figure. This paper is the subject of a patent disclosure. Such a mirror can produce large stroke at rates compatible with thermal distortions in high power lasers. This paper discusses the design of this device including range of deformation, ways to measure the temperature of the tubes, and algorithms to control mirror shape while compensating for the non-symmetrical response of thermal expansion and contraction. The construction of a prototype device and the associated control electronics and software is also covered. Photographs of the working device are shown.

Citation Download Citation

Carlos A. Caicedo, Allan Wirth, Greg LaRosa, Rob Coerver, John Wilt, and Mike Taylor "Thermal deformable mirror", Proc. SPIE 6272, Advances in Adaptive Optics II, 627252 (27 June 2006); https://doi.org/10.1117/12.672022

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