An interferometric wavefront sensor for high-sensitivity low-amplitude measurements

Nazim A. Bharmal; Richard M. Myers; Alastair G. Basden; Andrew P. Reeves

doi:10.1117/12.925988

13 September 2012 An interferometric wavefront sensor for high-sensitivity low-amplitude measurements

Nazim A. Bharmal, Richard M. Myers, Alastair G. Basden, Andrew P. Reeves

Proceedings Volume 8447, Adaptive Optics Systems III; 84472J (2012) https://doi.org/10.1117/12.925988
Event: SPIE Astronomical Telescopes + Instrumentation, 2012, Amsterdam, Netherlands

Abstract

We present a wavefront sensor design for the purpose of measuring post-AO corrected light, especially in the cases of high-Strehl and when using natural guide stars. It is inspired by holographic design principles and oers approximately two orders of magnitude increase in sensitivity over a conventional Shack-Hartmann design. The theoretical design and that of a laboratory prototype are presented, together with simulation results for a case-study of sinusoidal phase and the corresponding results from a laboratory experiment.

Citation Download Citation

Nazim A. Bharmal, Richard M. Myers, Alastair G. Basden, and Andrew P. Reeves "An interferometric wavefront sensor for high-sensitivity low-amplitude measurements", Proc. SPIE 8447, Adaptive Optics Systems III, 84472J (13 September 2012); https://doi.org/10.1117/12.925988

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