Multiplexed grating array based zonal wavefront sensor

Biswajit Pathak

doi:10.1117/12.3007752

13 March 2024 Multiplexed grating array based zonal wavefront sensor

Biswajit Pathak

Author Affiliations +

Proceedings Volume 12910, Practical Holography XXXVIII: Displays, Materials, and Applications; 129100P (2024) https://doi.org/10.1117/12.3007752
Event: SPIE OPTO, 2024, San Francisco, California, United States

Conference Poster

Abstract

The grating array-based wavefront sensor (GAWS) is a programmable version of the popular Shack-Hartmann wavefront sensor (SHWS) that consists of a 2D array of plane binary diffraction gratings and a single focusing lens. In the present work, a multiplexed GAWS (MGAWS) is proposed that generates a pair of low- and high-sampling zonal spots, simultaneously, having different dimensions and spatial frequencies. Realisation of both the low- and high-sampling zonal spots will allow to perform a sequence of zonal sensing in succession such that it results in reduced zonal cross-talk and improved dynamic range, in the presence of higher order aberrations. Proof-of-concept simulation results are presented to demonstrate the working of proposed MGAWS and its performance is also compared with conventional GAWS.

(2024) Published by SPIE. Downloading of the abstract is permitted for personal use only.

Citation Download Citation

Biswajit Pathak "Multiplexed grating array based zonal wavefront sensor", Proc. SPIE 12910, Practical Holography XXXVIII: Displays, Materials, and Applications, 129100P (13 March 2024); https://doi.org/10.1117/12.3007752

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