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Phase change dispersion of plasmonic nano-objects.

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.

SUBMITTER: Zeng X

PROVIDER: S-EPMC4518265 | biostudies-literature | 2015

REPOSITORIES: biostudies-literature

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Phase change dispersion of plasmonic nano-objects.

Zeng Xie X Hu Haifeng H Gao Yongkang Y Ji Dengxin D Zhang Nan N Song Haomin H Liu Kai K Jiang Suhua S Gan Qiaoqiang Q

Scientific reports 20150729

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 w ...[more]

PMID: 26219831

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