大学物理 ›› 2023, Vol. 42 ›› Issue (12): 18-.doi: 10.16854 /j.cnki.1000-0712.230179

• 系庆文献 • 上一篇    下一篇

手性回音壁微腔的有限元仿真

张维元,俞骁翀   

  1. 北京师范大学 物理学系,北京100875
  • 出版日期:2024-01-05 发布日期:2024-01-16

Finite-Element-Method simulation of chiral WGM microcavities

ZHANG Wei-yuan,YU Xiao-chong   

  1. Department of Physics, Beijing Normal University, Beijing 100875, China
  • Online:2024-01-05 Published:2024-01-16

摘要: 光学回音壁模式具有极高品质因子、小模式体积,是基础光物理和光子学研究的重要平台.常见的光学回音壁微腔往往存在镜像反映面,导致模式的偏振自由度没有得到充分利用,限制了其对手性物质的区分能力.本文探讨了手性微腔中的模式特征,特别对其中的回音壁模式的偏振进行分析,建立了针对涉及手性材料的波动光学有限元法仿真框架,为手性光子学研究提供了有力的工具.

关键词: 光学微腔, 回音壁模式, 模式偏振, 旋光性材料, 有限元仿真

Abstract: Optical whispering gallery modes possess ultra-high quality factors and small mode volumes, making them an important platform for fundamental optical physics and photonics research. However, common optical WGM microcavities often have mirrored invertion symmetry, which limits the utilization of their polarization degrees of freedom and thereby restricts their ability to distinguish chiral materials. In this article, we introduce chiral materials into the microcavity, and analyze the polarization property of the WGM. We also establish an effective finite-element-method framework to simulate chiral material, providing a powerful tool for chiral photonics research.

Key words: optical microcavities, whispering gallery modes, mode polarization, optical active materials, finite element method simulation