Elimination of Chirality in Three-Dimensionally Confined Open-Access Microcavities

Author:

Li Yiming1,Li Yuan2,Luo Xiaoxuan1,Guo Chaowei3,Qin Yuanbin3,Fu Hongbing2,Zhang Yanpeng1,Yun Feng14,Liao Qing2,Li Feng14

Affiliation:

1. Key Laboratory for Physical Electronics and Devices of the Ministry of Education & Shaanxi Key Lab of Information Photonic Technique, School of Electronic Science and Engineering, Faculty of Electronic and Information Engineering, Xi’an Jiaotong University, Xi’an 710049, China

2. Beijing Key Laboratory for Optical Materials and Photonic Devices, Department of Chemistry, Capital Normal University, Beijing 100048, China

3. Center for Advancing Materials Performance from the Nanoscale (CAMP-Nano), State Key Laboratory for Mechanical Behavior of Materials, Xi’an Jiaotong University, Xi’an 710049, China

4. Solid-State Lighting Engineering Research Center, Xi’an Jiaotong University, Xi’an 710049, China

Abstract

The emergent optical activity (OA) caused by anisotropic light emitter in microcavities is an important physical mechanism discovered recently, which leads to Rashba–Dresselhaus photonic spin-orbit (SO) coupling. In this study, we report a sharp contrast of the roles of the emergent OA in free and confined cavity photons, by observing the optical chirality in a planar–planar microcavity and its elimination in a concave–planar microcavity, evidenced by polarization-resolved white-light spectroscopy, which agrees well with the theoretical predictions based on the degenerate perturbation theory. Moreover, we theoretically predict that a slight phase gradient in real space can partially restore the effect of the emergent OA in confined cavity photons. The results are significant additions to the field of cavity spinoptronics and provide a novel method for manipulating photonic SO coupling in confined optical systems.

Funder

National Natural Science Foundation of China

Shaanxi Key Science and Technology Innovation Team Project

National key R&D Program of China

Natural Science Foundation of Beijing, China

Publisher

MDPI AG

Subject

General Materials Science,General Chemical Engineering

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