拓扑半导体激光器研究进展  

Research progress on topological semiconductor lasers

作　　者：齐营新 耿业 徐威 朱志宏[1] 杨镖 Yingxin Qi;Ye Geng;Wei Xu;Zhihong Zhu;Biao Yang(College of Advanced Interdisciplinary Studies,National University of Defense Technology,Changsha 410073,China)

机构地区：[1]国防科技大学前沿交叉学科学院,长沙410073

出　　处：《科学通报》2024年第27期4012-4024,共13页Chinese Science Bulletin

基　　金：国家自然科学基金(12322412)资助。

摘　　要：受凝聚态物理中拓扑相概念的启发,拓扑光子学这一研究领域应运而生.它提供了一种新颖的光场调控机制:缺陷免疫且背散射抑制的边界输运、自旋轨道依赖的选择性传输、高维度光场调控等.同时,拓扑边界态、拓扑角态和拓扑缺陷态的发现推动着拓扑半导体激光器的产生和发展.本文回顾了拓扑半导体激光器的研究进展,分析了各种拓扑半导体激光器的原理和结构,以及拓扑边界态、角态和缺陷态的物理基础.相比拓扑边界态和拓扑角态,基于拓扑缺陷态的谐振腔具有大自由光谱范围、小远场发散角以及矢量光场输出等特性,对应的拓扑半导体激光器功率更高,鲁棒性更好.拓扑半导体激光器对激光雷达、激光打印、光子集成等应用具有深远的影响.Drawing inspiration from the concept of topological phases in condensed matter physics,topological photonics has undergone significant development.It offers innovative mechanisms for manipulating light fields,including unidirectional edge states,spin-orbit coupled transport,and high-dimensional light field control.Meanwhile,the identification of topological edge states,corner states,and defect states,alongside the integration of diverse semiconductor gain materials(including quantum dots,multi-quantum wells,and perovskites),has promoted the emergence and development of topological lasers.In this paper,we examine the advancements in topological laser research,analyzing the principles,structures,and physical foundations of various topological lasers.Based on topological theory,topological lasers can be broadly categorized into those originating from topological insulators and topological defects.Lasers employing the 1D Su-Schrieffer-Heeger model represent a distinct category.In a topological 1D SSH system,the zero-energy states localized at the boundaries are identified as the topological edge states.Additionally,the domain wall between topological and trivial systems can be regarded as a zero-dimensional dislocation,which hosts the topological defect state.In contrast to conventional microring arrays or photonic crystal lasers,topological lasers exhibit defect immunity and band-gap mode characteristics.These features facilitate the creation of robust single-mode lasers with high efficiency and low thresholds,providing significant advantages in practical applications where environmental stability and reliability are paramount.Meanwhile,certain lasers based on topological insulators excite topological edge states via the quantum Hall effect,quantum spin Hall effect,and valley Hall effect,whereas others induce topological corner states using the 2D Su-Schrieffer-Heeger model and Kagome lattice.The former can construct coherent laser arrays,create traveling-wave resonators with arbitrary profiles,and generate vortex l

关 键 词：拓扑光子学 拓扑边界态 拓扑角态 狄拉克涡旋态 拓扑旋错态 拓扑半导体激光器 

分 类 号：TN248.4[电子电信—物理电子学]