Smart responsive organic microlasers with multiple emission states for high-security optical encryption  

作　　者：Zhenhua Gao Kang Wang Yongli Yan 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]School of Materials Science Engineering,Qi In University of Technology(Shandong Academy of Sciences),Jinan 250353,China [3]University of Chinese Academy of Sciences,Beijing 100049,China

出　　处：《National Science Review》2021年第2期90-96,共7页国家科学评论（英文版）

基　　金：the Ministry of Science and Technology of China(2017YFA0204502);the National Natural Science Foundation of China(21790364,21922307,21773265 and 21905145)。

摘　　要：Modern high-security cryptography and optical communication call for covert bit sequences with high coding capacity and efficient authentication.Stimuli-responsive lasing emissions with easily distinguishable readout are promising in the coding field as a novel cryptographic primitive,while the application is frequently restricted by the limited number of emission states.Here,we report a strategy of achieving multiple competitive lasing signals in responsive organic microspheres where a donor–acceptor pair was introduced.The competitive lasing from the donor and acceptor was reversibly switched by modulating the competition between the radiative rate of the donor and the rate of energy transfer,and the generated multiple lasing signals enabled a quaternary coding for recognizable cryptographic implementation.Data encryption and extraction were demonstrated using a 4×4 microlaser array,showing vast prospects in avoiding the disclosure of security information.The results offer a comprehensive understanding of excited-state dynamics in organic composite materials,which may play a major role in high-security optical recording and information encryption.

关 键 词：organic laser NANOPHOTONICS excited-state process RESPONSIVENESS optical encryption 

分 类 号：TN248[电子电信—物理电子学]