Liquid crystal gratings based on alternate TN and PA photoalignment

Wei Hu; Abhishek Srivastava; Fei Xu; Jia Tong Sun; Xiao Wen Lin; Hong Qing Cui; Vladimir Chigrinov; Yan Qing Lu

doi:10.1364/OE.20.005384

Liquid crystal gratings based on alternate TN and PA photoalignment

Wei Hu^*, Abhishek Srivastava, Fei Xu, Jia Tong Sun, Xiao Wen Lin, Hong Qing Cui, Vladimir Chigrinov, Yan Qing Lu

^*Corresponding author for this work

Department of Electronic and Computer Engineering

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

100 Citations (Scopus)

Abstract

A diffraction grating is proposed by periodically defining the liquid-crystal director distribution to form alternate parallel aligned and twist nematic regions in a cell placed between two crossed polarizers. Based on the combined phase and amplitude modulation, both 1D and 2D tunable gratings are demonstrated. Low voltage ON/OFF switching of 1st order diffracted light with extinction ratio over 80 is achieved within a small voltage interval of 0.15 V_rms. Unique four-state feature of the cell is obtained and their applications in optical logic devices are discussed.

Original language	English
Pages (from-to)	5384-5391
Number of pages	8
Journal	Optics Express
Volume	20
Issue number	5
DOIs	https://doi.org/10.1364/OE.20.005384
Publication status	Published - 27 Feb 2012

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10.1364/OE.20.005384

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abstract = "A diffraction grating is proposed by periodically defining the liquid-crystal director distribution to form alternate parallel aligned and twist nematic regions in a cell placed between two crossed polarizers. Based on the combined phase and amplitude modulation, both 1D and 2D tunable gratings are demonstrated. Low voltage ON/OFF switching of 1st order diffracted light with extinction ratio over 80 is achieved within a small voltage interval of 0.15 Vrms. Unique four-state feature of the cell is obtained and their applications in optical logic devices are discussed.",

author = "Wei Hu and Abhishek Srivastava and Fei Xu and Sun, \{Jia Tong\} and Lin, \{Xiao Wen\} and Cui, \{Hong Qing\} and Vladimir Chigrinov and Lu, \{Yan Qing\}",

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T1 - Liquid crystal gratings based on alternate TN and PA photoalignment

AU - Hu, Wei

AU - Srivastava, Abhishek

AU - Xu, Fei

AU - Sun, Jia Tong

AU - Lin, Xiao Wen

AU - Cui, Hong Qing

AU - Chigrinov, Vladimir

AU - Lu, Yan Qing

PY - 2012/2/27

Y1 - 2012/2/27

N2 - A diffraction grating is proposed by periodically defining the liquid-crystal director distribution to form alternate parallel aligned and twist nematic regions in a cell placed between two crossed polarizers. Based on the combined phase and amplitude modulation, both 1D and 2D tunable gratings are demonstrated. Low voltage ON/OFF switching of 1st order diffracted light with extinction ratio over 80 is achieved within a small voltage interval of 0.15 Vrms. Unique four-state feature of the cell is obtained and their applications in optical logic devices are discussed.

AB - A diffraction grating is proposed by periodically defining the liquid-crystal director distribution to form alternate parallel aligned and twist nematic regions in a cell placed between two crossed polarizers. Based on the combined phase and amplitude modulation, both 1D and 2D tunable gratings are demonstrated. Low voltage ON/OFF switching of 1st order diffracted light with extinction ratio over 80 is achieved within a small voltage interval of 0.15 Vrms. Unique four-state feature of the cell is obtained and their applications in optical logic devices are discussed.

UR - https://www.webofscience.com/wos/woscc/full-record/WOS:000301053200059

UR - https://openalex.org/W2076814571

UR - https://www.scopus.com/pages/publications/84857539895

U2 - 10.1364/OE.20.005384

DO - 10.1364/OE.20.005384

M3 - Journal Article

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SN - 1094-4087

VL - 20

SP - 5384

EP - 5391

JO - Optics Express

JF - Optics Express

IS - 5

ER -

Liquid crystal gratings based on alternate TN and PA photoalignment

Abstract

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