Raman spectroscopy based on a single-crystal sapphire fiber

Cody Raml, Xiangnan He, Ming Han, Dennis R Alexander, Yongfeng Lu

Research output: Contribution to journalArticle

15 Citations (Scopus)

Abstract

We demonstrate the advantages of using a single-crystal sapphire fiber to perform Raman spectroscopy over using a standard glass fiber. The narrow Raman peaks and the low background signal of a single-crystal sapphire fiber allow for the detection of weaker Raman signals or Raman signals much closer to the incident laser wavelength than with a standard glass fiber, which has a strong broadband Raman spectrum of its own. The Raman spectra of calcite, single walled carbon nanotubes, and aqueous sodium carbonate solution were collected using a 50 cm long, 200 μm diameter sapphire fiber, and then they were compared with the results using a 50cm long, 100 μm diameter glass fiber. The Raman spectrum of each tested material becomes indistinguishable due to the background Raman signal of the glass fiber but can easily be seen using the sapphire fiber, which has only a few narrow Raman peaks of its own.

Original languageEnglish (US)
Pages (from-to)1287-1289
Number of pages3
JournalOptics Letters
Volume36
Issue number7
DOIs
StatePublished - Apr 1 2011

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glass fibers
sapphire
Raman spectroscopy
fibers
single crystals
Raman spectra
sodium carbonates
calcite
carbon nanotubes
broadband
wavelengths
lasers

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics

Cite this

Raman spectroscopy based on a single-crystal sapphire fiber. / Raml, Cody; He, Xiangnan; Han, Ming; Alexander, Dennis R; Lu, Yongfeng.

In: Optics Letters, Vol. 36, No. 7, 01.04.2011, p. 1287-1289.

Research output: Contribution to journalArticle

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