迈向实用的圆偏振发光：基于碳点的圆偏振激光器

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中图分类号：064 doi： 10.1016/j.actphy.2025.100191

Towards practical circularly polarized luminescence： carbon dotsbased circularly polarized lasers

Ting Li†， Xiao Zeng †， Yuzhuo Yang†， Xinyi Wen， Shurong Ding，Linlin Shi*， Yongqiang Zhang*， Siyu Lu* School of Chemistry，Pingyuan Laboratory，Zhengzhou University， Zhengzhou 45ooo1， Henan Province， China

Abstract：Circularly polarized luminescence （CPL） has significant application value in fields such as quantum computing， three-dimensional （3D） display，and bioimaging. However， its practical application faces challenges including low dissymmetry factor （g） ， insufficient quantum yield， poor directionality， and broad emission spectrum.To addressthese issues， circularly polarized laser technologycan significantly enhance CPL performance through stimulated emission amplification and resonant cavity mode selection， achieving circularly polarized light output with high g （close to the theoretical limit of 2），high brightness，narrow linewidth，and strong directionality. Currently， although materials like organic microcrystals and perovskites can realize circularly polarized laser with high g ， they still have problems such as complex preparation and poor biocompatibility. In contrast，carbon dots （CDs） have emerged as a highly promising new type of circularly polarized gain medium due to their advantages of simple preparation，low cost，low toxicity， easy modification， and good biocompatibility.This paper systematicaly reviews the material systems，device types，and application progress of circularly polarized laser，focusing on the advantages of CDs as gain media and their potential in fields such as 3D display， optical communication， information encryption，and biosensing. Italso prospects the future development directions and chalenges of CDs-based circularly polarized lasers，providing a reference for promoting the practical application process of high-performance circularly polarized laser devices.

Key Words： Carbon dots; Chiral structure; Circularly polarized luminescence; Circularly polarized laser;Dissymmetry factor;Gain material

1引言

圆偏振发光（circularlypolarized luminescence，CPL）由于其发光的不对称性、良好的视觉舒适性以及优异的生物相容性，在量子计算与信息加密、高分辨率三维（three-dimensional，3D）显示、发光器件及深层荧光成像等领域展现出广阔的应用前景，因而受到广泛关注。（剩余41374字）