Characterization of large deformable mirrors

Gavin R. G. Erry; Leonard John Otten; Paul Harrison; Vadim Samarkin

doi:10.1117/12.565256

11 November 2004 Characterization of large deformable mirrors

Gavin R. G. Erry, Leonard John Otten, Paul Harrison, Vadim Samarkin

Proceedings Volume 5572, Optics in Atmospheric Propagation and Adaptive Systems VII; (2004) https://doi.org/10.1117/12.565256
Event: Remote Sensing, 2004, Maspalomas, Canary Islands, Spain

Abstract

A key element in any adaptive optics system is the deformable mirror used to introduce the conjugate correction. In this paper we will present the results from characterizing a pair of custom 20 element, 38 mm diameter, bimorph deformable mirrors that were specifically designed to provide unusually large stroke to allow correction of significant focus and astigmatism terms in a human fundus adaptive optics imager. Data on the measured correction capability and inherent hysteresis of the mirror shown that the mirrors have 40 μm waves of defocus correction and 20 μm waves of astigmatism correction at 760 nm, with a typical hysteresis at full deflection of 15%. This technology is patented under Patent # 6,331,059 B1.

Citation Download Citation

Gavin R. G. Erry, Leonard John Otten, Paul Harrison, and Vadim Samarkin "Characterization of large deformable mirrors", Proc. SPIE 5572, Optics in Atmospheric Propagation and Adaptive Systems VII, (11 November 2004); https://doi.org/10.1117/12.565256

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