Raman Spectroscopy of Nanoparticles Using Hollow-Core Photonic Crystal Fibers

Author

Irizar, Juan ; Dinglasan, Jordan ; Goh, J.B. ; Khetani, Altaf ; Anis, Hanan ; Anderson, Darren ; Goh, Clarence ; Helmy, A.S.

Author_Institution

Dept. of Electr. & Comput. Eng., Toronto Univ., Toronto, ON

Volume

14

Issue

4

fYear

2008

Firstpage

1214

Lastpage

1222

Abstract

Hollow-core photonic crystal fibers (HC-PCF) were employed for enhancing the Raman signal obtained from ZnO nanoparticles (NPs) in solution. By selectively filling the core of HC-PCF, substantial enhancement in the Raman signal was obtained. By employing this technique, four different stages in the synthesis ZnO NPs were studied with record low pump power levels. The concentration of ZnO NPs in the system was <1% by weight of the total mass. Yet, the different synthesis stages could be differentiated and identified through the Raman modes obtained. It was also demonstrated that the concentration of NPs in solution could be obtained with sensitivity in the millimolar range. This could be achieved by examining the amplitude ratios of the relevant Raman modes.

Keywords

II-VI semiconductors; Raman spectra; Raman spectroscopy; nanoparticles; photonic crystals; wide band gap semiconductors; zinc compounds; Raman modes; Raman signal; Raman spectroscopy; ZnO; core filling; hollow-core photonic crystal fibers; nanoparticles; Biomedical optical imaging; Molecular beam epitaxial growth; Monitoring; Nanoparticles; Optical sensors; Photonic crystal fibers; Raman scattering; Signal synthesis; Spectroscopy; Zinc oxide; Colloidal nanoparticles (NPs); Raman enhancement; Raman spectroscopy; ZnO nanoparticles; photonic crystal fibers (PCFs);

fLanguage

English

Journal_Title

Selected Topics in Quantum Electronics, IEEE Journal of

Publisher

ieee

ISSN

1077-260X

Type

jour

DOI

10.1109/JSTQE.2008.922915

Filename

4582374