混沌微腔激光器的研究进展(特邀)  

Research Progress on Chaotic Microcavity Lasers(Invited)

作　　者：李建成 雷彬鹃 肖金龙[1,2] 杨跃德 黄永箴[1,2] LI Jiancheng;LEI Binjuan;XIAO Jinlong;YANG Yuede;HUANG Yongzhen(Key Laboratory of Optoelectronic Materials and Devices,Institute of Semiconductors,Chinese Academy of Sciences,Beijing 100083,China;Center of Materials Science and Optoelectronics Engineering,University of Chinese Academy of Sciences,Beijing 100049,China)

机构地区：[1]中国科学院半导体研究所光电子材料与器件重点实验室,北京100083 [2]中国科学院大学材料与光电研究中心,北京100049

出　　处：《光子学报》2024年第5期113-124,共12页Acta Photonica Sinica

基　　金：国家自然科学基金(Nos.12274407,61935018,62122073)。

摘　　要：半导体混沌激光器已被应用在随机数生成、安全通信、混沌探测等领域。实现混沌激光器最常用方法是光反馈,但采用离散器件搭建的混沌激光器系统结构复杂、稳定性差。基于光反馈原理的光子集成混沌激光器、体积小,但工艺复杂,且无法避免光反馈引入的弱周期性。基于微腔内模式相互作用产生的自发混沌半导体微腔激光器,无需外部扰动,具有体积小、工艺简单、混沌带宽大、混沌态工作条件宽和无反馈弱周期性等优点,有望在具体应用中进一步发挥作用。针对近年来基于微腔的混沌激光器研究情况,本文进行了分类介绍,包括自发混沌微腔激光器、光反馈混沌微腔激光器和集成互注入激光器,总结了自发混沌微腔激光器的当前应用,对自发混沌微腔激光器的未来发展做了展望。Semiconductor chaotic lasers have been investigated for physical random bit generation,secure communication,and chaotic detection,owing to its characteristics of randomness,high sensitivity to initial conditions,and broad radio-frequency spectrum.In order to destabilize the semiconductor lasers for chaos generation,external perturbations are usually required,such as optical injection,optical feedback,or optoelectronic feedback.However,semiconductor chaotic laser systems consisting of discrete optical components are susceptible to environmental disturbance.Then,various integrated chaotic semiconductor lasers have been developed to meet the requirement of miniaturization and stability.A deterministic polarization chaos without external perturbation was also reported in Vertical-Cavity Surface-Emitting Laser(VCSELs).Whispering gallery microcavity has become an important optical platform for laser nonlinear researches because of its high quality-factor and small mode volume.Compared with integrated chaos chips and self-chaotic VCSELs,self-chaotic microcavity lasers with the small volume,large chaotic bandwidth and wide chaotic operation condition,require simple process without repeated epitaxy,and are easy to mass production with low cost.In this paper,we review the progress on chaotic microcavity lasers in three aspects:self-chaotic microlasers,chaotic microlasers based on optical feedbak,and integrated mutual-injection microlasers.We also introduce the applications of self-chaotic microcavity lasers.The progresses on the self-chaotic microcavity lasers without external perturbations are first reviewed.A circular-sided hexagonal chaotic microlasers was introduced due to the internal mode interaction of two transverse modes.When the mode interval is below the relaxation oscillation frequency,carrier density can oscillate dramatically with the mode-beating,and an internal optical-injection perturbation is obtained with side-peaks of lasing modes.Consequently,chaotic dynamics could spontaneously generate due to carrier

关 键 词：微腔 混沌 半导体激光器 非线性 物理随机数 混沌探测 

分 类 号：TN365[电子电信—物理电子学]