Understanding the degrees of freedom of wavefront modulation by liquid crystal on silicon microdisplay with a digital backplane

A. R. Sánchez-Montez; J. Francés; A. Moya; E. J. Mena; J. C. Bravo; E. M. Calzado; S. Gallego; A. Beléndez; A. Márquez

doi:10.1117/12.3027529

30 September 2024 Understanding the degrees of freedom of wavefront modulation by liquid crystal on silicon microdisplay with a digital backplane

A. R. Sánchez-Montez, J. Francés, A. Moya, E. J. Mena, J. C. Bravo, E. M. Calzado, S. Gallego, A. Beléndez, A. Márquez

Author Affiliations +

Proceedings Volume 13136, Optics and Photonics for Information Processing XVIII; 131360A (2024) https://doi.org/10.1117/12.3027529
Event: Optical Engineering + Applications, 2024, San Diego, California, United States

Abstract

Digital backplane liquid crystal on silicon devices (LCoS) are widely used in wavefront engineering applications due the maturity of the technology, thus the reliability of their performance. A thorough study of the relation between the different control parameters and their effect on the retardance modulation is lacking though. These control parameters, which are the low and high levels of the voltage signal together with the grey level addressed, in relation with the retardance modulation produced are explored across the whole visible spectrum. From a more practical point of view, this enables to decide which voltage parameters across the whole range of possibilities are the most appropriate for a certain wavefront engineering problem without the need to measure them in advance. Additionally, we are interested in the comparison of two different approaches developed in our research group to obtain the retardance modulation to see their possible pros and cons. The results presented are backed by the experimental measurements provided.

Conference Presentation

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

Citation Download Citation

A. R. Sánchez-Montez, J. Francés, A. Moya, E. J. Mena, J. C. Bravo, E. M. Calzado, S. Gallego, A. Beléndez, and A. Márquez "Understanding the degrees of freedom of wavefront modulation by liquid crystal on silicon microdisplay with a digital backplane", Proc. SPIE 13136, Optics and Photonics for Information Processing XVIII, 131360A (30 September 2024); https://doi.org/10.1117/12.3027529

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