Reconfigurable Geometrical Phase Spatial Light Modulator Using Short‐Pitch Ferroelectric Liquid Crystals

This article presents an approach to achieve a fast and analog geometrical phase modulation based on the optical axis rotation of the defect‐free Deformed Helix Ferroelectric Liquid Crystal (DHFLC) with a short pitch. This study demonstrates a Spatial Light Modulator (SLM) prototype with a feature s...

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Bibliographic Details
Published in:Advanced optical materials 2023-10, Vol.11 (19)
Main Authors: Sun, Zhi‐Bo, Yuan, Zheng‐Nan, Swaminathan, Vigneshwaran, Vashchenko, Valerii, Vashchenko, Olena, Cheung, Alex Yuk Lung, Lu, Lei, Kwok, Hoi‐Sing, Srivastava, Abhishek Kumar
Format: Article
Language:English
Subjects:
Beam steering
Birefringence
Crystal defects
Diffraction efficiency
Electric fields
Ellipticity
Ferroelectric materials
Ferroelectricity
Liquid crystals
Materials science
Optics
Phase modulation
Spatial light modulators
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Summary:This article presents an approach to achieve a fast and analog geometrical phase modulation based on the optical axis rotation of the defect‐free Deformed Helix Ferroelectric Liquid Crystal (DHFLC) with a short pitch. This study demonstrates a Spatial Light Modulator (SLM) prototype with a feature size of 3 µm without Fringe Field Effect (FFE), having a phase depth of 1.9π, fast switching time (
ISSN:2195-1071
2195-1071
DOI:10.1002/adom.202300561