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Optical Engineering

Extended use of two crossed Babinet compensators for wavefront sensing in adaptive optics
Author(s): Lancelot Paul; Ajay Kumar Saxena
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Paper Abstract

An extended use of two crossed Babinet compensators as a wavefront sensor for adaptive optics applications is proposed. This method is based on the lateral shearing interferometry technique in two directions. A single record of the fringes in a pupil plane provides the information about the wavefront. The theoretical simulations based on this approach for various atmospheric conditions and other errors of optical surfaces are provided for better understanding of this method. Derivation of the results from a laboratory experiment using simulated atmospheric conditions demonstrates the steps involved in data analysis and wavefront evaluation. It is shown that this method has a higher degree of freedom in terms of subapertures and on the choice of detectors, and can be suitably adopted for real-time wavefront sensing for adaptive optics.

Paper Details

Date Published: 1 December 2010
PDF: 11 pages
Opt. Eng. 49(12) 126601 doi: 10.1117/1.3518068
Published in: Optical Engineering Volume 49, Issue 12
Show Author Affiliations
Lancelot Paul, Indian Institute of Astrophysics (India)
Ajay Kumar Saxena, Indian Institute of Astrophysics (India)

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