Abstract

We describe how the finite-difference time-domain (FDTD) technique can be used to compute the quasi-normal mode (QNM) for metallic nano-resonators, which is important for describing and understanding light–matter interactions in nanoplasmonics. We use the QNM to model the enhanced spontaneous emission rate for dipole emitters near a gold nanorod dimer structure using a newly developed QNM expansion technique. Enhanced single photon emission factors of around 1500 and output $\beta$-factors of around 60% are found near the localized plasmon resonance.

© 2014 Optical Society of America

Quasi-normal mode approach to the local-field problem in quantum optics

Rong-Chun Ge, Jeff F. Young, and S. Hughes
Optica 2(3) 246-249 (2015)

Dark dimer mode excitation and strong coupling with a nanorod dipole

Yixiao Gao, Ning Zhou, Zhangxing Shi, Xin Guo, and Limin Tong
Photon. Res. 6(9) 887-892 (2018)

Nonlocal quasinormal modes for arbitrarily shaped three-dimensional plasmonic resonators

Mohsen Kamandar Dezfouli, Christos Tserkezis, N. Asger Mortensen, and Stephen Hughes
Optica 4(12) 1503-1509 (2017)

Finite-difference time-domain technique as an efficient tool for calculating the regularized Green function: applications to the local-field problem in quantum optics for inhomogeneous lossy materials

C. Van Vlack and S. Hughes
Opt. Lett. 37(14) 2880-2882 (2012)

Analysis of dephasing time of plasmonic hybridization modes using a quasi-normal mode method

Lun Wang, Boyu Ji, Yang Xu, Peng Lang, Xiaowei Song, and Jingquan Lin
J. Opt. Soc. Am. B 40(1) 178-186 (2023)