Affiliation:
1. School of Electrical Engineering, Research Center of Intelligent Sensor and Network Engineering Technology of Jiangsu Province Nanjing Vocational University of Industry Technology Nanjing Jiangsu 210023 China
2. School of Science, Jiangsu Province Engineering Research Center of Low Dimensional Physics and New Energy Nanjing University of Posts and Telecommunications Nanjing Jiangsu 210023 China
3. College of Electronic and Optical Engineering Nanjing University of Posts and Telecommunications Nanjing Jiangsu 210023 China
Abstract
AbstractSurface polaritons are surface electromagnetic waves propagating along the surface of a medium, which play an important role in enhancing the photonic spin Hall effect (SHE). Among them, the successful excitation of surface exciton polaritons (SEPs) often requires cryogenic temperature, which limits their practical applications. In this contribution, a promising mechanism is presented for enhancing the photonic SHE by taking advantage of room‐temperature SEPs in a prism‐glass‐TDBC‐air configuration. By depositing the TDBC layer on plasmon active metal, the hybrid polariton, namely, surface plasmon exciton polariton (SPEP) can be observed, which gives rise to the further enhancement of photonic SHE. Furthermore, a refractive index sensor based on SEP (or SPEP) enhanced photonic SHE is proposed with the superior sensing performance. The results pave the way for the realization of giant photonic SHE in this simple and promising method, and offer the opportunity for developing highly sensitive optical sensors.
Funder
National Natural Science Foundation of China
Subject
General Physics and Astronomy