scholarly journals Fast-response infrared phase modulator based on polymer network liquid crystal

2015 ◽  
Vol 5 (2) ◽  
pp. 265 ◽  
Author(s):  
Fenglin Peng ◽  
Haiwei Chen ◽  
Suvagata Tripathi ◽  
Robert J. Twieg ◽  
Shin-Tson Wu
Keyword(s):  
Liquid Crystal ◽  
Polymer Network ◽  
Fast Response ◽  
Phase Modulator

Fast Response Phase Modulator in Infrared Waveband Based on Polymer Network Liquid Crystal

2014 ◽  
Vol 34 (6) ◽  
pp. 0623001
Author(s):  
赵祥杰 Zhao Xiangjie ◽  
刘仓理 Liu Cangli ◽  
曾建成 Zeng Jiancheng ◽  
张大勇 Zhang Dayong ◽  
骆永全 Luo Yongquan
Keyword(s):  
Liquid Crystal ◽  
Polymer Network ◽  
Fast Response ◽  
Phase Modulator ◽  
Response Phase

Characterization of submillisecond response optical addressing phase modulator based on low light scattering polymer network liquid crystal

2015 ◽  
Vol 117 (1) ◽  
pp. 014501 ◽  
Author(s):  
Zhao Xiangjie ◽  
Liu Cangli ◽  
Duan Jiazhu ◽  
Zhang Dayong ◽  
Luo Yongquan
Keyword(s):  
Liquid Crystal ◽  
Light Scattering ◽  
Polymer Network ◽  
Phase Modulator ◽  
Low Light

Fast-response IR spatial light modulators with a polymer network liquid crystal

2015 ◽  
Author(s):  
Fenglin Peng ◽  
Haiwei Chen ◽  
Suvagata Tripathi ◽  
Robert J. Twieg ◽  
Shin-Tson Wu
Keyword(s):  
Liquid Crystal ◽  
Polymer Network ◽  
Fast Response ◽  
Spatial Light Modulators ◽  
Light Modulators

scholarly journals Morphology effect on the light scattering and dynamic response of polymer network liquid crystal phase modulator

2014 ◽  
Vol 22 (12) ◽  
pp. 14757 ◽  
Author(s):  
Zhao Xiangjie ◽  
Liu Cangli ◽  
Duan Jiazhu ◽  
Zeng Jiancheng ◽  
Zhang Dayong ◽  
...  
Keyword(s):  
Liquid Crystal ◽  
Light Scattering ◽  
Dynamic Response ◽  
Polymer Network ◽  
Crystal Phase ◽  
Phase Modulator ◽  
Liquid Crystal Phase ◽  
Morphology Effect ◽  
Liquid Crystal Phase Modulator

scholarly journals Liquid Crystal Beam Steering Devices: Principles, Recent Advances, and Future Developments

Crystals ◽  
2019 ◽  
Vol 9 (6) ◽  
pp. 292 ◽  
Author(s):  
Ziqian He ◽  
Fangwang Gou ◽  
Ran Chen ◽  
Kun Yin ◽  
Tao Zhan ◽  
...  
Keyword(s):  
Liquid Crystal ◽  
High Efficiency ◽  
Response Times ◽  
Beam Steering ◽  
Polymer Network ◽  
Large Angle ◽  
Fast Response ◽  
Wide Field ◽  
Recent Advances ◽  
Optical Phased Array

Continuous, wide field-of-view, high-efficiency, and fast-response beam steering devices are desirable in a plethora of applications. Liquid crystals (LCs)—soft, bi-refringent, and self-assembled materials which respond to various external stimuli—are especially promising for fulfilling these demands. In this paper, we review recent advances in LC beam steering devices. We first describe the general operation principles of LC beam steering techniques. Next, we delve into different kinds of beam steering devices, compare their pros and cons, and propose a new LC-cladding waveguide beam steerer using resistive electrodes and present our simulation results. Finally, two future development challenges are addressed: Fast response time for mid-wave infrared (MWIR) beam steering, and device hybridization for large-angle, high-efficiency, and continuous beam steering. To achieve fast response times for MWIR beam steering using a transmission-type optical phased array, we develop a low-loss polymer-network liquid crystal and characterize its electro-optical properties.

Sheared polymer network liquid crystal for fast-response variable optical attenuators

2005 ◽  
Author(s):  
Yung-Hsun Wu ◽  
Yi-Hsin Lin ◽  
Yan-Qing Lu ◽  
Hongwen Ren ◽  
Yun-Hsing Fan ◽  
...  
Keyword(s):  
Liquid Crystal ◽  
Polymer Network ◽  
Fast Response ◽  
Response Variable ◽  
Optical Attenuators ◽  
Variable Optical Attenuators

scholarly journals High-Contrast and Scattering-Type Transflective Liquid Crystal Displays Based on Polymer-Network Liquid Crystals

Polymers ◽  
2020 ◽  
Vol 12 (4) ◽  
pp. 739 ◽  
Author(s):  
Cheng-Kai Liu ◽  
Wei-Hsuan Chen ◽  
Chung-Yu Li ◽  
Ko-Ting Cheng
Keyword(s):  
Liquid Crystal ◽  
Polymer Network ◽  
Liquid Crystal Displays ◽  
Quarter Wave Plate ◽  
High Contrast ◽  
Trade Off ◽  
Twisted Nematic ◽  
Quarter Wave ◽  
The Common ◽  
Linear Polarizer

The methods to enhance contrast ratios (CRs) in scattering-type transflective liquid crystal displays (ST-TRLCDs) based on polymer-network liquid crystal (PNLC) cells are investigated. Two configurations of ST-TRLCDs are studied and are compared with the common ST-TRLCDs. According to the comparisons, CRs are effectively enhanced by assembling a linear polarizer at the suitable position to achieve better dark states in the transmissive and reflective modes of the reported ST-TRLCDs with the optimized configuration, and its main trade-off is the loss of brightness in the reflective modes. The PNLC cell, which works as an electrically switchable polarizer herein, can be a PN-90° twisted nematic LC (PN-90° TNLC) cell or a homogeneous PNLC (H-PNLC) cell. The optoelectric properties of PN-90° TNLC and those of H-PNLC cells are compared in detail, and the results determine that the ST-TRLCD with the optimized configuration using an H-PNLC cell can achieve the highest CR. Moreover, no quarter-wave plate is used in the ST-TRLCD with the optimized configuration, so a parallax problem caused by QWPs can be solved. Other methods for enhancing the CRs of the ST-TRLCDs are also discussed.

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