Fast switching beam steering based on ferroelectric liquid crystal phase shutter and polarisation grating

Qi Guo; Lin Xu; Jiatong Sun; Xiaoqian Yang; Hongwei Liu; Kexin Yan; Huijie Zhao; V. G. Chigrinov; H. S. Kwok

doi:10.1080/02678292.2019.1573327

Fast switching beam steering based on ferroelectric liquid crystal phase shutter and polarisation grating

Qi Guo^*
, Lin Xu
, Jiatong Sun
, Xiaoqian Yang
, Hongwei Liu
, Kexin Yan
, Huijie Zhao
, V. G. Chigrinov
, H. S. Kwok

^*Corresponding author for this work

Institute of China South Industry
Donghua University
Beihang University
Hong Kong University of Science and Technology

Research output: Contribution to journal › Article › peer-review

30 Scopus citations

Abstract

We report on fast-switching and high-efficient optical beam steering based on a polymerisable liquid crystal polarisation grating (PG) in combination with ferroelectric liquid crystal (FLC) phase shutter. The PG was fabricated in a convenient single-step holographic exposure process using photo-sensitive azo-dye material as alignment layer for liquid crystal (LC) director. A binary electro-optical FLC was employed for circular polarisation selection, which enables the electro-tunable steering of the combined system. The efficiency of 95.7% with 82 μs switching time is obtained for 1064 nm laser. This work provides a versatile candidate for non-mechanical beam steering devices.

Original language	English
Pages (from-to)	1383-1388
Number of pages	6
Journal	Liquid Crystals
Volume	46
Issue number	9
DOIs	https://doi.org/10.1080/02678292.2019.1573327
State	Published - 15 Jul 2019

Keywords

Ferroelectric liquid crystal
beam steering
diffractive optical element
photoalignment

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10.1080/02678292.2019.1573327

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title = "Fast switching beam steering based on ferroelectric liquid crystal phase shutter and polarisation grating",

abstract = "We report on fast-switching and high-efficient optical beam steering based on a polymerisable liquid crystal polarisation grating (PG) in combination with ferroelectric liquid crystal (FLC) phase shutter. The PG was fabricated in a convenient single-step holographic exposure process using photo-sensitive azo-dye material as alignment layer for liquid crystal (LC) director. A binary electro-optical FLC was employed for circular polarisation selection, which enables the electro-tunable steering of the combined system. The efficiency of 95.7\% with 82 μs switching time is obtained for 1064 nm laser. This work provides a versatile candidate for non-mechanical beam steering devices.",

keywords = "Ferroelectric liquid crystal, beam steering, diffractive optical element, photoalignment",

author = "Qi Guo and Lin Xu and Jiatong Sun and Xiaoqian Yang and Hongwei Liu and Kexin Yan and Huijie Zhao and Chigrinov, \{V. G.\} and Kwok, \{H. S.\}",

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year = "2019",

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doi = "10.1080/02678292.2019.1573327",

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TY - JOUR

T1 - Fast switching beam steering based on ferroelectric liquid crystal phase shutter and polarisation grating

AU - Guo, Qi

AU - Xu, Lin

AU - Sun, Jiatong

AU - Yang, Xiaoqian

AU - Liu, Hongwei

AU - Yan, Kexin

AU - Zhao, Huijie

AU - Chigrinov, V. G.

AU - Kwok, H. S.

PY - 2019/7/15

Y1 - 2019/7/15

N2 - We report on fast-switching and high-efficient optical beam steering based on a polymerisable liquid crystal polarisation grating (PG) in combination with ferroelectric liquid crystal (FLC) phase shutter. The PG was fabricated in a convenient single-step holographic exposure process using photo-sensitive azo-dye material as alignment layer for liquid crystal (LC) director. A binary electro-optical FLC was employed for circular polarisation selection, which enables the electro-tunable steering of the combined system. The efficiency of 95.7% with 82 μs switching time is obtained for 1064 nm laser. This work provides a versatile candidate for non-mechanical beam steering devices.

AB - We report on fast-switching and high-efficient optical beam steering based on a polymerisable liquid crystal polarisation grating (PG) in combination with ferroelectric liquid crystal (FLC) phase shutter. The PG was fabricated in a convenient single-step holographic exposure process using photo-sensitive azo-dye material as alignment layer for liquid crystal (LC) director. A binary electro-optical FLC was employed for circular polarisation selection, which enables the electro-tunable steering of the combined system. The efficiency of 95.7% with 82 μs switching time is obtained for 1064 nm laser. This work provides a versatile candidate for non-mechanical beam steering devices.

KW - Ferroelectric liquid crystal

KW - beam steering

KW - diffractive optical element

KW - photoalignment

UR - https://www.scopus.com/pages/publications/85061000776

U2 - 10.1080/02678292.2019.1573327

DO - 10.1080/02678292.2019.1573327

M3 - 文章

AN - SCOPUS:85061000776

SN - 0267-8292

VL - 46

SP - 1383

EP - 1388

JO - Liquid Crystals

JF - Liquid Crystals

IS - 9

ER -

Fast switching beam steering based on ferroelectric liquid crystal phase shutter and polarisation grating

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Keywords

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