Affiliation:
1. Beijing Academy of Science and Technology
2. Wuhan University
3. Wuhan Institute of Quantum Technology
Abstract
Plasmonic nanostructures with subwavelength confinement are of great importance for the development of integrated nanophotonic circuits and devices. Here, we experimentally investigate how the polarization of the emitted light from nanowire-particle junction relies on the incident polarization. We demonstrate that the correlations can be effectively modulated by the particle position relative to the wire. By varying the wire-particle gap with only several nanometers, the nanowire-particle junction can be changed from polarization maintainer to rotator. Then, by moving the particle along the wire within half of the surface plasmon polariton (SPP) beat, the polarization behaviors can be tuned from positive to negative correlation. The mechanism can be well understood by the hybridization of wire-particle coupled mode and propagating SPP modes, which is verified by finite-difference time-domain simulations. These findings would provide a new degree of freedom for manipulating light polarization at the nanometer scale and additional flexibility for constructing nanophotonic devices.
Funder
Beijing Municipal Natural Science Foundation
National Key Research and Development Program of China
National Natural Science Foundation of China
Beijing Municipal Reform and Development Project
National Youth Talent Support Program
Training Program of the Major Research Plan of Capital Normal University
Scientific Research Base Development Program of Beijing Municipal Commission of Education and the Beijing Key Laboratory of Metamaterials and Devices
Subject
Atomic and Molecular Physics, and Optics
Cited by
1 articles.
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