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

作　　者：Lingling Ma Chaoyi Li Luyao Sun Zhenpeng Song Yanqing Lu Bingxiang Li 

机构地区：[1]College of Electronic and Optical Engineering and College of Microelectronics,Nanjing University of Posts and Telecommunications,Nanjing 210023,China [2]National Laboratory of Solid State Microstructures,Nanjing University,Nanjing 210093,China [3]Collaborative Innovation Center of Advanced Microstructures and College of Engineering and Applied Sciences,Nanjing University,Nanjing 210093,China

出　　处：《Photonics Research》2022年第3期786-792,共7页光子学研究（英文版）

基　　金：National Key Research and Development Program of China(2021YFA1202000);National Natural Science Foundation of China(RK106LH21001,52003115);Natural Science Foundation of Jiangsu Province(BK20212004,BK20200320);Innovation and Entrepreneurship Program of Jiangsu Province.

摘　　要：Soft photonic crystals are appealing due to their self-assembly ability,wide 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.

关 键 词：FASTER ORDERS refractive 

分 类 号：O734[理学—晶体学]