Surface enhanced Raman scattering and photo-luminescence through Bloch surface waves in dielectric multilayers

Author

Pirotta, S. ; Xu, X.G. ; Delfan, A. ; Mysore, S. ; Maiti, Santa ; Dacarro, Giacomo ; Patrini, Maddalena ; Guizzetti, Giorgio ; Bajoni, Daniele ; Sipe, J.E. ; Walker, G.C. ; Liscidini, M. ; Galli, Matteo

Author_Institution

Dipartimento di Fisica, Università di Pavia, I-27100, Italy

fYear

2013

fDate

23-27 June 2013

Firstpage

1

Lastpage

4

Abstract

In this work we study the Surface Enhanced Raman Scattering (SERS) via Bloch Surface Waves (BSWs) in a dielectric multi-layered structure. When the pump beam is resonantly coupled to the BSW, our results demonstrate a lower bound for the SERS-enhancement of about 50. A photo-luminescence (PL) experiment performed on the same structure shows an emission enhancement in excess of two orders of magnitude, suggesting an actual SERS-enhancement of 200, in agreement with theoretical calculations. These findings suggest that purely dielectric BSW-based structures can be a valid alternative to plasmonic substrates for enhanced Raman and photo-luminescence spectroscopy.

Keywords

Dielectrics; Nonhomogeneous media; Optical surface waves; Raman scattering; Rough surfaces; Surface roughness; Surface waves; BSW; Photo-luminescence; SERS;

fLanguage

English

Publisher

ieee

Conference_Titel

Transparent Optical Networks (ICTON), 2013 15th International Conference on

Conference_Location

Cartagena, Spain

ISSN

2161-2056

Type

conf

DOI

10.1109/ICTON.2013.6602933

Filename

6602933