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 Zhenhua Gao;Kang Wang;Yongli Yanl;Jiannian Yao;Yong Sheng Zhao

作者机构：Key Laboratory of photochemistryInstitute of ChemistryChinese Academy of Sciences School of Materials Science & EngineeringQilu University of Technology(Shandong Academy of Sciences) University of Chinese Academy of Sciences 

出 版 物：《National Science Review》 (国家科学评论(英文版))

年 卷 期：2021年第8卷第2期

页      面：95-101页

核心收录：

学科分类：080901[工学-物理电子学] 0809[工学-电子科学与技术（可授工学、理学学位）] 08[工学] 080401[工学-精密仪器及机械] 0804[工学-仪器科学与技术] 0803[工学-光学工程] 

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

主　　题：organic laser nanophotonics excited-state process responsiveness optical encryption 

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.