Performance of ferroelectric liquid crystal spatial light modulators for polarization and color diffractive elements

Ignacio Moreno; P. García-Martínez; M. M. Sánchez-López; A. Martínez-García; J. L. Martínez

doi:10.1117/12.826154

1 September 2009 Performance of ferroelectric liquid crystal spatial light modulators for polarization and color diffractive elements

Ignacio Moreno, P. García-Martínez, M. M. Sánchez-López, A. Martínez-García, J. L. Martínez

Author Affiliations +

Proceedings Volume 7442, Optics and Photonics for Information Processing III; 74420W (2009) https://doi.org/10.1117/12.826154
Event: SPIE Optical Engineering + Applications, 2009, San Diego, California, United States

Abstract

In this work we applied a ferroelectric liquid crystal on silicon (FLCoS) display for implementing monochrome and color diffractive optical elements (DOE). We first apply a reverse engineering process specifically adapted to characterize the optical parameters of a commercial FLCoS display, specifically the phase shift and the tilt angle. We then analyze the performance of the device for implementing a binary polarization diffraction grating (PDG), and how it adopts the form of either a binary amplitude grating or a binary phase grating as particular cases when the polarization states emerging from the display are projected to an analyzer. As a final experiment, we have applied the FLCoS display to generate RGB improved dynamic color binary-phase Fourier computer-generated holograms (CGHs). We have electronically synchronized the properly scaled image addressed to the display with a color filter wheel with RGB filters. Experimental results show an excellent chromatic compensation of the color image reconstruction.

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Ignacio Moreno, P. García-Martínez, M. M. Sánchez-López, A. Martínez-García, and J. L. Martínez "Performance of ferroelectric liquid crystal spatial light modulators for polarization and color diffractive elements", Proc. SPIE 7442, Optics and Photonics for Information Processing III, 74420W (1 September 2009); https://doi.org/10.1117/12.826154

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KEYWORDS

Polarization

Diffraction

Diffraction gratings

Binary data

Polarizers

LCDs

Phase shifts

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