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Plasmonics

, Volume 13, Issue 5, pp 1549–1554 | Cite as

Plasmon-Enhanced Optical Transmission at Multiple Wavelengths Through an Asymmetric Corrugated Thin Silver Film

  • Jianjun Cao
  • Yuan Sun
  • Huaxin Zhu
  • Ming Cao
  • Xiumei Zhang
  • Shumei Gao
Article

Abstract

Micro- and nanometallic structures that exhibit extraordinary optical transmission (EOT) have attracted much attention for their potential applications in photonic devices. However, most existing reports have only discussed EOT at one specific wavelength, which limits its use in multi-wavelength applications. Here, we experimentally demonstrate EOT at multiple wavelengths through an asymmetric corrugated thin silver film due to simultaneous excitation of multiple plasmonic resonances at both interfaces. A unique method that applies single-pulse nanosecond laser interference lithography is introduced to produce the silver grating, which shows high quality over large area. At oblique incidence, each EOT peak is observed to split into two peaks oppositely shifted towards higher and lower frequencies. At some specific angles of incidence, overlap of these shifted peaks gives rise to distorted transmission spectra. Our method may find applications involving multiple wavelengths such as multi-wavelength bandpass filters, anti-Stokes Raman scattering spectroscopy, enhanced four-wave mixing, and so on.

Keywords

Extraordinary optical transmission Surface plasmon polaritons Multi-wavelength devices Asymmetric corrugated structures 

Notes

Funding Information

This work is supported by the National Natural Science Foundation of China (Grant No. 61605067) and the Fundamental Research Funds for the Central Universities (Grant No. JUSRP11722).

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Copyright information

© Springer Science+Business Media, LLC 2017

Authors and Affiliations

  1. 1.Jiangsu Provincial Research Center of Light Industrial Optoelectronic Engineering and Technology, School of ScienceJiangnan UniversityWuxiChina

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