Calibration of a Shack-Hartmann wavefront sensor using spherical wavefronts from a point source

Alexander N. Nikitin; Ilya Galaktionov; Julia Sheldakova; Alexis Kudryashov; Dmitrii Denisov; Anastasiya Zolotukhina

doi:10.1117/12.2615161

4 March 2022 Calibration of a Shack-Hartmann wavefront sensor using spherical wavefronts from a point source

Alexander N. Nikitin, Ilya Galaktionov, Julia Sheldakova, Alexis Kudryashov, Dmitrii Denisov, Anastasiya Zolotukhina

Author Affiliations +

Proceedings Volume 11987, Laser Resonators, Microresonators, and Beam Control XXIV; 119870J (2022) https://doi.org/10.1117/12.2615161
Event: SPIE LASE, 2022, San Francisco, California, United States

Abstract

A high-quality flat wavefront is usually used to calibrate the Shack-Hartmann wavefront sensors. The article discusses the possibility of calibrating sensors with spherical wavefronts. Special attention is paid to the consideration of calibration in standard laboratory conditions. The mathematical apparatus and the scheme of the experiment are considered. A statistical analysis of the calibration accuracy of the Shack-Hartmann wavefront sensor is carried out. Spherical wavefronts from a point source were used as references. As a result, the parameters of the wavefront sensor were determined: the focal length and the dimensions of the digital camera pixel. This calibration method is considered in comparison with the traditional calibration using flat wavefronts.

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Alexander N. Nikitin, Ilya Galaktionov, Julia Sheldakova, Alexis Kudryashov, Dmitrii Denisov, and Anastasiya Zolotukhina "Calibration of a Shack-Hartmann wavefront sensor using spherical wavefronts from a point source", Proc. SPIE 11987, Laser Resonators, Microresonators, and Beam Control XXIV, 119870J (4 March 2022); https://doi.org/10.1117/12.2615161

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