Wavefront correction in a shaped-pupil coronagraph using a Gerchberg-Saxton-based estimation scheme

Jason Kay; N. Jeremy Kasdin; Ruslan Belikov

doi:10.1117/12.734610

18 September 2007 Wavefront correction in a shaped-pupil coronagraph using a Gerchberg-Saxton-based estimation scheme

Jason Kay, N. Jeremy Kasdin, Ruslan Belikov

Proceedings Volume 6691, Astronomical Adaptive Optics Systems and Applications III; 66910D (2007) https://doi.org/10.1117/12.734610
Event: Optical Engineering + Applications, 2007, San Diego, California, United States

Abstract

The detection of extra-solar terrestrial planets requires the use of space-based high-contrast imaging. Stellar photon noise as well as light thrown about by system aberrations necessitate the use of a high quality light suppression system and a method for wavefront correction. We present here a wavefront estimation scheme to be used with estimate-based correction for the shaped pupil coronagraph. In order to properly estimate the field in a reimaged pupil plane, we employ the use of the iterative Gerchberg-Saxton estimation algorithm between it and a second-focus image plane. We utilize the correction algorithm to overcome an ambiguity inherent in Gerchberg-Saxton estimation.

Citation Download Citation

Jason Kay, N. Jeremy Kasdin, and Ruslan Belikov "Wavefront correction in a shaped-pupil coronagraph using a Gerchberg-Saxton-based estimation scheme", Proc. SPIE 6691, Astronomical Adaptive Optics Systems and Applications III, 66910D (18 September 2007); https://doi.org/10.1117/12.734610

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