TY - JOUR
T1 - Forward-propagating surface-enhanced Raman scattering and intensity distribution in photonic crystal fiber with immobilized Ag nanoparticles
AU - Oo, Maung Kyaw Khaing
AU - Han, Yun
AU - Martini, Rainer
AU - Sukhishvili, Svetlana
AU - Du, Henry
PY - 2009/4/1
Y1 - 2009/4/1
N2 - 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.
AB - 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.
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U2 - 10.1364/OL.34.000968
DO - 10.1364/OL.34.000968
M3 - Article
C2 - 19340187
AN - SCOPUS:66349109997
SN - 0146-9592
VL - 34
SP - 968
EP - 970
JO - Optics Letters
JF - Optics Letters
IS - 7
ER -