Shack-Hartmann sensor with B-spline approximation technique

Ilya Galaktionov; Alexander Nikitin; Julia Sheldakova; Alexis Kudryashov

doi:10.1117/12.2614658

4 March 2022 Shack-Hartmann sensor with B-spline approximation technique

Ilya Galaktionov, Alexander Nikitin, Julia Sheldakova, Alexis Kudryashov

Proceedings Volume 11987, Laser Resonators, Microresonators, and Beam Control XXIV; 119870K (2022) https://doi.org/10.1117/12.2614658
Event: SPIE LASE, 2022, San Francisco, California, United States

Abstract

In this paper we demonstrate the results of implementation of B-spline surface approximation algorithm for Shack-Hartmann wavefront sensor. We compared the efficiency of reconstruction of simple simulated wavefronts, represented by the single aberrations, such as defocus, coma, astigmatism, trefoil, spherical aberration, etc. by means of Zernike and B-spline polynomials. We also demonstrated the efficiency of the use of B-spline approximation of the complex wavefronts: Franke surface (RMS of the initial and the reconstructed surface was equal to 0.38 and 0.39 um, respectively) and wavefront of the thin ring-shaped detail (outer/inner diameter of the ring was 114/95 mm) with the peak-to-valley of approximately 3.5 um.

Conference Presentation

Citation Download Citation

Ilya Galaktionov, Alexander Nikitin, Julia Sheldakova, and Alexis Kudryashov "Shack-Hartmann sensor with B-spline approximation technique", Proc. SPIE 11987, Laser Resonators, Microresonators, and Beam Control XXIV, 119870K (4 March 2022); https://doi.org/10.1117/12.2614658

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