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Proceedings Paper

Test results of optimal phase diversity selection using a LCOS-SLM for remote sensing adaptive optics
Author(s): Norihide Miyamura
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Paper Abstract

We propose an adaptive optics system using a Liquid crystal on Silicon Spatial Light Modulator (LCOS-SLM) for wavefront control. The phase diversity technique is used as a wavefront sensor, which estimates a wavefront aberration using processing images acquired by mission sensor instead of using additional wavefront sensor hardware. Because of simplicity in a hardware architecture, the phase diversity technique is suitable especially for a light weight remote sensing satellite. In the conventional phase diversity method, prior information, which is defined as a phase diversity, is applied to the optical system by defocusing. Then wavefront aberrations are estimated using the phase diversity and acquired images. For generating prior information, we uses the LCOS-SLM which generate arbitrary wavefront shape. In this cases, the selection of the phase diversity affect the estimation accuracy of the wavefront aberration. This paper describes the selection strategy of phase diversities, and then validates it by laboratory test.

Paper Details

Date Published: 4 May 2010
PDF: 8 pages
Proc. SPIE 7723, Optics, Photonics, and Digital Technologies for Multimedia Applications, 772308 (4 May 2010); doi: 10.1117/12.853952
Show Author Affiliations
Norihide Miyamura, The Univ. of Tokyo (Japan)

Published in SPIE Proceedings Vol. 7723:
Optics, Photonics, and Digital Technologies for Multimedia Applications
Peter Schelkens; Touradj Ebrahimi; Gabriel Cristóbal; Frédéric Truchetet; Pasi Saarikko, Editor(s)

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