Twisting Structures in Liquid Crystal Polarization Gratings and Lenses

Recently, diverse twisting structures have been discovered to be a potential approach to design liquid crystal polarization gratings and lenses (LCPGs and LCPLs) with a high diffraction efficiency, broad bandwidth, wide view, and large diffraction angle. In this review, we divide these twisting stru...

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Bibliographic Details
Published inCrystals (Basel) Vol. 11; no. 3; p. 243
Main Authors Zhang, Shiyuan, Chen, Wan, Yu, Yang, Wang, Qidong, Mu, Quanquan, Li, Shixiao, Chen, Jin
Format Journal Article
LanguageEnglish
Published Basel MDPI AG 01.03.2021
Subjects
Bragg gratings
Compensation
Crystal structure
Diffraction efficiency
Efficiency
Lenses
Light
Liquid crystals
Multilayers
Optical properties
Polarization
polarization gratings and lens
Twisting
twisting structures
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Summary:Recently, diverse twisting structures have been discovered to be a potential approach to design liquid crystal polarization gratings and lenses (LCPGs and LCPLs) with a high diffraction efficiency, broad bandwidth, wide view, and large diffraction angle. In this review, we divide these twisting structures into two main types, namely, multi-layer twisting structures with phase compensation and twisting structures forming Bragg diffraction. We found that multi-layer twisting structure LCPGs and LCPLs presented a broader bandwidth and a wider view angle by phase compensation. While for transmissive or reflective Bragg LCPGs, a large diffraction angle with high diffraction efficiency could be achieved. Based on the theoretical analysis in the review, potential research directions on novel twisting structures were prospected.
ISSN:2073-4352
2073-4352
DOI:10.3390/cryst11030243