Benchmarking Shack-Hartmann measurements of spatial light modulator output for the reconfigurable null of rectangular freeform optics

Renuka Manjula Narayanan; Romita Chaudhuri; Jannick P. Rolland

doi:10.1117/12.2691687

29 November 2023 Benchmarking Shack-Hartmann measurements of spatial light modulator output for the reconfigurable null of rectangular freeform optics

Renuka Manjula Narayanan, Romita Chaudhuri, Jannick P. Rolland

Author Affiliations +

Proceedings Volume 12778, Optifab 2023; 127780K (2023) https://doi.org/10.1117/12.2691687
Event: SPIE Optifab, 2023, Rochester, New York, United States

Abstract

We have designed and simulated the interferometric null test of a rectangular aperture freeform mirror using a spatial light modulator or SLM as the reconfigurable computer-generated hologram. We use a high dynamic range Shack- Hartmann wavefront sensor (SHWS) to monitor the SLM output. Here, we focus on benchmarking the measurement of the SLM output using the SHWS for rectangular apertures with a 50-wave peak-to-valley astigmatic wavefront designed in the Chebyshev polynomial basis. The error between the SLM output and the nominal wavefront input is compensated through an iterative optimization strategy to sub-diffraction limited RMS wavefront error.

Conference Presentation

(2023) Published by SPIE. Downloading of the abstract is permitted for personal use only.

Citation Download Citation

Renuka Manjula Narayanan, Romita Chaudhuri, and Jannick P. Rolland "Benchmarking Shack-Hartmann measurements of spatial light modulator output for the reconfigurable null of rectangular freeform optics", Proc. SPIE 12778, Optifab 2023, 127780K (29 November 2023); https://doi.org/10.1117/12.2691687

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