Submicrosecond electro-optical switching of one-dimensional soft photonic crystals

被引:28
作者
Ma, Lingling [1 ,2 ,3 ,4 ,5 ]
Li, Chaoyi [3 ,4 ,5 ]
Sun, Luyao [1 ,2 ]
Song, Zhenpeng [1 ,2 ]
Lu, Yanqing [3 ,4 ,5 ]
Li, Bingxiang [1 ,2 ,3 ]
机构
[1] Nanjing Univ Posts & Telecommun, Coll Elect & Opt Engn, Nanjing 210023, Peoples R China
[2] Nanjing Univ Posts & Telecommun, Coll Microelect, Nanjing 210023, Peoples R China
[3] Nanjing Univ, Natl Lab Solid State Microstruct, Nanjing 210093, Peoples R China
[4] Nanjing Univ, Collaborat Innovat Ctr Adv Microstruct, Nanjing 210093, Peoples R China
[5] Nanjing Univ, Coll Engn & Appl Sci, Nanjing 210093, Peoples R China
基金
中国国家自然科学基金;
关键词
LIQUID-CRYSTAL; SELECTIVE REFLECTION; SUPERSTRUCTURES;
D O I
10.1364/PRJ.449284
中图分类号
O43 [光学];
学科分类号
070207 ; 0803 ;
摘要
Soft photonic crystals are appealing due to their self-assembly ability, "de tunability, and multistimuli-responsiveness. However, their response time is relatively slow, ranging from milliseconds to minutes. Here, we report submicrosecond switching of chiral liquid crystals (LCs) with 1D photonic microstructures, where electric fields modify the orientational order of molecules and quench their fluctuations, rather than altering the orientation. Thus, the adjusted refractive indices result in a fast shift of the photonic bandgap, on the order of 100 ns, which is four orders of magnitude faster than conventional electro-optic switching in cholesterics. This work offers tremendous opportunities for soft photonic applications. (C) 2022 Chinese Laser Press
引用
收藏
页码:786 / 792
页数:7
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