Open AccessRadiation properties of quantum emitters via a plasmonic waveguide integrated with a V-shaped traveling wave antenna
Author(s) -
Yinxing Ding,
Yi Xu,
Axin He,
Tongzhou Zhang,
Baowei Gao,
Jiasen Zhang
Publication year - 2020
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.405653
Subject(s) - physics , optics , antenna (radio) , plasmon , directivity , radiation , surface plasmon , effective radiated power , waveguide , optoelectronics , telecommunications , computer science
We experimentally study the radiation direction and relaxation rate of quantum emitters (QEs) coupled with a plasmonic waveguide integrated with a V-shaped traveling wave antenna. The plasmonic waveguide couples the excitation energy of the nearby QEs into surface plasmons and the connected V-shaped traveling wave antenna converts them into highly directional radiation. The directivity of the radiation depends on the shape of the antenna. The half-power beam widths of the radiation with respect to the azimuthal and polar angles are as small as 15.1° and 13.1°, respectively, when the antenna has a 144° intersection angle. The relaxation rates of the QEs are enhanced up to 33.04 times relative to the intrinsic emission rate. The method to control the fluorescence of QEs is of great significance for optical devices, nanoscale light sources, and integrated optics.