Laser Raman spectroscopy with different excitation sources and extension to surface enhanced raman spectroscopy

Md Wahadoszamen, Arifur Rahaman, Nabil Md Rakinul Hoque, Aminul I Talukder, Kazi Monowar Abedin, A. F M Yusuf Haider

Research output: Contribution to journalArticle

8 Citations (Scopus)

Abstract

A dispersive Raman spectrometer was used with three different excitation sources (Argon-ion, He-Ne, and Diode lasers operating at 514.5 nm, 633 nm, and 782 nm, resp.). The system was employed to a variety of Raman active compounds. Many of the compounds exhibit very strong fluorescence while being excited with a laser emitting at UV-VIS region, hereby imposing severe limitation to the detection efficiency of the particular Raman system. The Raman system with variable excitation laser sources provided us with a desired flexibility toward the suppression of unwanted fluorescence signal. With this Raman system, we could detect and specify the different vibrational modes of various hazardous organic compounds and some typical dyes (both fluorescent and nonfluorescent). We then compared those results with the ones reported in literature and found the deviation within the range of ±2 cm-1, which indicates reasonable accuracy and usability of the Raman system. Then, the surface enhancement technique of Raman spectrum was employed to the present system. To this end, we used chemically prepared colloidal suspension of silver nanoparticles as substrate and Rhodamine 6G as probe. We could observe significant enhancement of Raman signal from Rhodamine 6G using the colloidal solution of silver nanoparticles the average magnitude of which is estimated to be 103.

Original languageEnglish
Article number895317
JournalJournal of Spectroscopy
Volume2015
DOIs
Publication statusPublished - 2015

Fingerprint

Laser spectroscopy
rhodamine
laser spectroscopy
Silver
Raman spectroscopy
Fluorescence
silver
Nanoparticles
fluorescence
nanoparticles
Laser excitation
augmentation
Argon
organic compounds
Fluorescent Dyes
Organic compounds
excitation
lasers
colloids
Semiconductor lasers

ASJC Scopus subject areas

  • Analytical Chemistry
  • Atomic and Molecular Physics, and Optics
  • Spectroscopy

Cite this

Laser Raman spectroscopy with different excitation sources and extension to surface enhanced raman spectroscopy. / Wahadoszamen, Md; Rahaman, Arifur; Hoque, Nabil Md Rakinul; I Talukder, Aminul; Abedin, Kazi Monowar; Haider, A. F M Yusuf.

In: Journal of Spectroscopy, Vol. 2015, 895317, 2015.

Research output: Contribution to journalArticle

Wahadoszamen, Md ; Rahaman, Arifur ; Hoque, Nabil Md Rakinul ; I Talukder, Aminul ; Abedin, Kazi Monowar ; Haider, A. F M Yusuf. / Laser Raman spectroscopy with different excitation sources and extension to surface enhanced raman spectroscopy. In: Journal of Spectroscopy. 2015 ; Vol. 2015.
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AU - Abedin, Kazi Monowar

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