南方科技大学知识苑(SUSTech KC): Numerical study of transmissive liquid crystal Pancharatnam-Berry gratings with small periods

题名	Numerical study of transmissive liquid crystal Pancharatnam-Berry gratings with small periods
作者	Liu, S. H. A.1; Yu, H. A. O.1; Jiang, M. I. A. O.1; Feng, J. U. N.2 ; Wei, Qi-huo 1
通讯作者	Wei, Qi-huo
发表日期	2023-02-02
DOI	10.1364/JOSAB.478494
发表期刊	JOURNAL OF THE OPTICAL SOCIETY OF AMERICA B-OPTICAL PHYSICS 影响因子和分区
ISSN	0740-3224
EISSN	1520-8540
卷号	40 期号:2页码:431-435
摘要	Advances in patterning molecular orientations in liquid crystals have made possible the fabrications of various high-quality flat optical elements, ranging from gratings to beam shaping devices. These devices are based on modulating the Pancharatnam-Berry (PB) phase. It is well known that the diffraction efficiency for liquid crystal PB optical elements decreases for large diffraction angles. Here we study this issue using numerical simulations based on finite-difference time-domain algorithms and show that the optical efficiency formula commonly used for liquid crystal gratings deviates significantly from numerical results and is inaccurate for small grating peri-ods because of its assumption that light beams do not diffract inside the liquid crystal films. We show that, for large diffraction angles, the polarization of the diffracted beam is generally elliptically polarized, and we further show that, by using liquid crystal materials with larger birefringence An similar to 0.4, the diffraction efficiency for a grating period of 0.8 gm can go above 90%, which can be used for various flat optical elements with numerical aperture similar to 0.7.(c) 2023 Optica Publishing Group
相关链接	[来源记录]
收录类别	SCI ; EI
语种	英语
学校署名	第一 ; 通讯
资助项目	Shenzhen Science and Technology Program[GJHZ20200731095212036] ; National Natural Science Foundation of China[12174177]
WOS研究方向	Optics
WOS类目	Optics
WOS记录号	WOS:000935859800004
出版者	Optica Publishing Group
EI入藏号	20231513878524
EI主题词	Diffraction efficiency ; Diffraction gratings ; Finite difference time domain method ; Fruits ; Liquid films ; Plastic films
EI分类号	Optical Devices and Systems:741.3 ; Polymer Products:817.1 ; Agricultural Products:821.4 ; Mathematics:921
ESI学科分类	PHYSICS
来源库	Web of Science
引用统计	被引频次[WOS]：2
成果类型	期刊论文
条目标识符	http://sustech.caswiz.com/handle/2SGJ60CL/502123
专题	工学院_机械与能源工程系工学院_材料科学与工程系
作者单位	1.Southern Univ Sci & Technol, Dept Mech & Energy Engn, Shenzhen 518055, Peoples R China 2.Southern Univ Sci & Technol, Dept Mat Sci & Engn, Shenzhen 518055, Peoples R China
第一作者单位	机械与能源工程系
通讯作者单位	机械与能源工程系
第一作者的第一单位	机械与能源工程系
推荐引用方式 GB/T 7714	Liu, S. H. A.,Yu, H. A. O.,Jiang, M. I. A. O.,et al. Numerical study of transmissive liquid crystal Pancharatnam-Berry gratings with small periods[J]. JOURNAL OF THE OPTICAL SOCIETY OF AMERICA B-OPTICAL PHYSICS,2023,40(2):431-435.
APA	Liu, S. H. A.,Yu, H. A. O.,Jiang, M. I. A. O.,Feng, J. U. N.,&Wei, Qi-huo.(2023).Numerical study of transmissive liquid crystal Pancharatnam-Berry gratings with small periods.JOURNAL OF THE OPTICAL SOCIETY OF AMERICA B-OPTICAL PHYSICS,40(2),431-435.
MLA	Liu, S. H. A.,et al."Numerical study of transmissive liquid crystal Pancharatnam-Berry gratings with small periods".JOURNAL OF THE OPTICAL SOCIETY OF AMERICA B-OPTICAL PHYSICS 40.2(2023):431-435.