Higher orders enhancement in gratings produced by a vertically aligned LCoS

Guillem Nájar; Francisco J. Martínez-Guardiola; Adriana R. Sánchez-Montes; Andrés P. Bernabeu; Eva M. Calzado; Daniel Puerto; Andrés Márquez

doi:10.1117/12.3016264

18 June 2024 Higher orders enhancement in gratings produced by a vertically aligned LCoS

Guillem Nájar, Francisco J. Martínez-Guardiola, Adriana R. Sánchez-Montes, Andrés P. Bernabeu, Eva M. Calzado, Daniel Puerto, Andrés Márquez

Author Affiliations +

Proceedings Volume 13015, Photosensitive Materials and their Applications III; 130150Z (2024) https://doi.org/10.1117/12.3016264
Event: SPIE Photonics Europe, 2024, Strasbourg, France

Abstract

Typically, a 360º phase-shift is required to implement diffractive optical elements (DOEs) in modern photonics applications. However, the possibility of showing much larger phase-shifts is a very appealing property which provides additional degrees of freedom to produce multiplexed functions onto DOEs. On the other hand, modern liquid crystal on silicon devices (LCoS) add real-time programmability to the functionality of the DOE displayed, but this has been typically demonstrated by parallel-aligned LCoS (PA-LCoS) devices. We show programmable DOEs produced using vertically-aligned LCoS (VA-LCoS) devices, with a phase-shift range largely exceeding 360º. We show some results dealing with blazed gratings and on the analysis of their higher diffraction orders, validating their use for multiorder diffractive optical elements.

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Citation Download Citation

Guillem Nájar, Francisco J. Martínez-Guardiola, Adriana R. Sánchez-Montes, Andrés P. Bernabeu, Eva M. Calzado, Daniel Puerto, and Andrés Márquez "Higher orders enhancement in gratings produced by a vertically aligned LCoS", Proc. SPIE 13015, Photosensitive Materials and their Applications III, 130150Z (18 June 2024); https://doi.org/10.1117/12.3016264

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