Randomized whispering-gallery-mode microdisk laser arrays via cavity deformations for anti-counterfeiting labels

作     者：WANGQI MAO XINYU GAO BO LI YAQIANG ZHANG PEI WANG HONGXING DONG LONG ZHANG WANGQI MAO;XINYU GAO;BO LI;YAQIANG ZHANG;PEI WANG;HONGXING DONG;LONG ZHANG

作者机构：Department of Optics and Optical EngineeringUniversity of Science and Technology of ChinaHefei 230026China Key Laboratory of Materials for High-Power LaserShanghai Institute of Optics and Fine MechanicsChinese Academy of SciencesShanghai 201800China Hangzhou Institute for Advanced StudyChinese Academy of SciencesHangzhou 310024China 

出 版 物：《光子学研究:英文版》 (Photonics Research)

年 卷 期：2023年第11卷第7期

页      面：1227-1237页

核心收录：

学科分类：0839[工学-网络空间安全] 08[工学] 081201[工学-计算机系统结构] 0812[工学-计算机科学与技术（可授工学、理学学位）] 

基　　金：National Natural Science Foundation of China (61925506) Natural Science Foundation of Shanghai (20JC1414605) Hangzhou Science and Technology Bureau of Zhejiang Province (TD2020002) Academic/Technology Research Leader Program of Shanghai (23XD1404500) 

主　　题：pump lasing cavity 

摘      要：Optical physical unclonable functions(PUFs)have emerged as a promising strategy for effective and unbreakable ***,the unpredictable spatial distribution and broadband spectra of most optical PUFs complicate efficient and accurate verification in practical anti-counterfeiting ***,we propose an optical PUF-based anti-counterfeiting label from perovskite microlaser arrays,where randomness is introduced through vapor-induced microcavity *** initial perovskite microdisk laser arrays with regular positions and uniform sizes are fabricated by femtosecond laser direct *** introducing vapor fumigation to induce random deformations in each microlaser cavity,a laser array with completely uneven excitation thresholds and narrow-linewidth lasing signals is *** a proof of concept,we demonstrated that the post-treated laser array can provide fixed-point and random lasing signals to facilitate information ***,different emission states of the lasing signal can be achieved by altering the pump energy density to reflect higher capacity information.A threefold PUF(excited under three pump power densities)with a resolution of 5×5 pixels exhibits a high encoding capacity(1.43×10^(45)),making it a promising candidate to achieve efficient authentication and high security with anti-counterfeiting labels.