Forward-propagating surface-enhanced Raman scattering and intensity distribution in photonic crystal fiber with immobilized Ag nanoparticles

Maung Kyaw Khaing Oo, Yun Han, Rainer Martini, Svetlana Sukhishvili, Henry Du

Research output: Contribution to journalArticlepeer-review

43 Scopus citations

Abstract

A 30 cm long solid-core photonic crystal fiber (PCF) with immobilized and discrete Ag nanoparticles was used to obtain forward-propagating surface-enhanced Raman scattering (SERS) of 2 μM Rhodamine 6G (R6G) aqueous solution filled in the cladding air channels. The intensity distributions of characteristic Raman vibrational bands of silica and R6G in PCF were mapped for the first time to our knowledge by hyperspectral Raman imaging. We show that the measured SERS intensity arises exclusively from the forward-propagating core mode as a result of evanescent-field interaction with R6G in the innermost ring of the cladding air channels.

Original languageEnglish
Pages (from-to)968-970
Number of pages3
JournalOptics Letters
Volume34
Issue number7
DOIs
StatePublished - 1 Apr 2009

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