Nanostructured dielectric surfaces for Raman spectroscopy: design and thermal analysis

L.P. (Pjotr) Stoevelaar, Jernej Černigoj, Jonas Berzins, F. Silvestri, Giampiero Gerini

Research output: Chapter in Book/Report/Conference proceedingConference contributionAcademicpeer-review

Abstract

In this paper, an all-dielectric metasurface for surface enhanced Raman spectroscopy (SERS) is presented. The proposed design constitutes of an array of silicon (Si) dimers on top of thin film of silicon nitride (SiN), deposited on a glass substrate. The coupling mechanism between the dimers is based on two orthogonal guided waves in the SiN film. These guided modes lead to a strong separation between excitation and emitted Raman signal in the waveguide. The new design is compared to a previously published dielectric design with a gold backing mirror. The comparison takes into account manufacturability, field enhancement and thermal aspects. This shows that the all-dielectric design has about 7 times less power dissipation but the enhancement factor is about 20 times smaller.
Original languageEnglish
Title of host publicationMetamaterials, Metadevices, and Metasystems 2019
EditorsNader Engheta, Mikhail A. Noginov, Nikolay I. Zheludev
Place of PublicationBellingham
PublisherSPIE
Number of pages4
ISBN (Electronic)9781510628533
DOIs
Publication statusPublished - 2019
EventSPIE Nanoscience + Engineering - San Diego Convention Center, San Diego, United States
Duration: 11 Aug 201915 Aug 2019

Publication series

NameProceedings of SPIE
Volume11080
ISSN (Print)0277-786X
ISSN (Electronic)1996-756X

Conference

ConferenceSPIE Nanoscience + Engineering
Country/TerritoryUnited States
CitySan Diego
Period11/08/1915/08/19

Keywords

  • All dielectric metasurface
  • Field enhancement
  • SERS
  • Silicon dimers
  • Waveguide
  • Field enhancement,silicon dimers
  • waveguide

Fingerprint

Dive into the research topics of 'Nanostructured dielectric surfaces for Raman spectroscopy: design and thermal analysis'. Together they form a unique fingerprint.

Cite this