Wavelength-Tunable Single-Mode Microlasers Based on Photoresponsive Pitch Modulation of Liquid Crystals for Information Encryption  

作　　者：Fa-Feng Xu Zhong-Liang Gong Yu-Wu Zhong Jiannian Yao Yong Sheng Zhao 

机构地区：[1]Key Laboratory of Photochemistry,Institute of Chemistry,Chinese Academy of Sciences,Beijing 100190,China [2]University of Chinese Academy of Sciences,Beijing 100049,China

出　　处：《Research》2020年第1期1044-1052,共9页研究（英文）

基　　金：This work was supported financially by the Ministry of Science and Technology of China(Grant No.2017YFA0204502);the National Natural Science Foundation of China(Grant Nos.21533013 and 21790364).

摘　　要：Information encryption and decryption have attracted particular attention;however,the applications are frequently restricted by limited coding capacity due to the indistinguishable broad photoluminescence band of conventional stimuli-responsive fluorescent materials.Here,we present a concept of confidential information encryption with photoresponsive liquid crystal(LC)lasing materials,which were used to fabricate ordered microlaser arrays through a microtemplate-assisted inkjet printing method.LC microlasers exhibit narrow-bandwidth single-mode emissions,and the wavelength of LC microlasers was reversibly modulated based on the optical isomerization of the chiral dopant in LCs.On this basis,we demonstrate phototunable information authentication on LC microlaser arrays using the wavelength of LC microlasers as primary codes.These results provide enlightenment for the implementation of microlaser-based cryptographic primitives for information encryption and anticounterfeiting applications.

关 键 词：DOPANT template LASING 

分 类 号：TN248[电子电信—物理电子学]