Phase Change Dispersion of Plasmonic Nano-objects

Overview

Journal Sci Rep

Specialty Science

Date 2015 Jul 30

PMID 26219831

Citations 2

Authors

Xie Zeng

Haifeng Hu

Yongkang Gao

Dengxin Ji

Nan Zhang

Haomin Song

Kai Liu

Suhua Jiang

Qiaoqiang Gan

Affiliations

Soon will be listed here.

Abstract

Phase is an inherent and important feature for coherent processes, which, unfortunately, has not been completely understood for surface plasmon polariton (SPP) and matter interactions. Here we propose a practical approach to extract the phase change dispersion during the interaction between free-space light, SPPs and nanogroove/slit based on far-field information only. Numerical simulation and experimental validation were both presented using nanoslit-groove plasmonic interferometers, agreeing well with theoretical near-field analysis. This approach is generally feasible to extract the intrinsic phase dispersion of other plasmonic nanostructures and can reveal more fundamental features of SPP-matter interactions.

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