Shack–Hartmann wavefront sensing using printed liquid crystal microlens arrays

Biswajit Pathak; Waqas Kamal; Steve Elston; Alfonso A. Castrejón-Pita; Martin Booth; Stephen Morris

doi:10.1117/12.3007745

13 March 2024 Shack–Hartmann wavefront sensing using printed liquid crystal microlens arrays

Biswajit Pathak, Waqas Kamal, Steve Elston, Alfonso A. Castrejón-Pita, Martin Booth, Stephen Morris

Proceedings Volume PC12907, Emerging Liquid Crystal Technologies XIX; PC129070Q (2024) https://doi.org/10.1117/12.3007745
Event: SPIE OPTO, 2024, San Francisco, California, United States

Conference Poster

Abstract

The two-dimensional array of microlenses used in Shack Hartmann wavefront sensors (SHWS) is an important element. Fabrication of such microlenses, however, can be an expensive and tedious process as it involves several stages that require high precision. These stringent fabrication conditions place limitations on its uses for different applications that require ease in alteration of parameters such as the number of elements, diameter of the lenses, and focal length of the array. In the present work, we demonstrate the implementation of inkjet-printed liquid crystal (LC) microlens arrays as a reliable alternative to that of the conventional microlenses used in SHWS. The fabrication of bespoke LC microlenses is rapid and economical and offers a number of flexibilities to easily tailor key parameters based on user requirements. Proof-of-concept experimental results are included that demonstrate the applicability of the LC microlens arrays for wavefront sensing.

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

Citation Download Citation

Biswajit Pathak, Waqas Kamal, Steve Elston, Alfonso A. Castrejón-Pita, Martin Booth, and Stephen Morris "Shack–Hartmann wavefront sensing using printed liquid crystal microlens arrays", Proc. SPIE PC12907, Emerging Liquid Crystal Technologies XIX, PC129070Q (13 March 2024); https://doi.org/10.1117/12.3007745

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