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Optics Letters

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  • Vol. 36, Iss. 7 — Apr. 1, 2011
  • pp: 1287–1289

Raman spectroscopy based on a single-crystal sapphire fiber

Cody Raml, Xiangnan He, Ming Han, Dennis R. Alexander, and Yongfeng Lu  »View Author Affiliations


Optics Letters, Vol. 36, Issue 7, pp. 1287-1289 (2011)
http://dx.doi.org/10.1364/OL.36.001287


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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 50 cm 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.

© 2011 Optical Society of America

OCIS Codes
(060.2370) Fiber optics and optical communications : Fiber optics sensors
(120.6200) Instrumentation, measurement, and metrology : Spectrometers and spectroscopic instrumentation
(300.6450) Spectroscopy : Spectroscopy, Raman

ToC Category:
Spectroscopy

History
Original Manuscript: January 10, 2011
Revised Manuscript: March 14, 2011
Manuscript Accepted: March 14, 2011
Published: March 31, 2011

Virtual Issues
Vol. 6, Iss. 5 Virtual Journal for Biomedical Optics

Citation
Cody Raml, Xiangnan He, Ming Han, Dennis R. Alexander, and Yongfeng Lu, "Raman spectroscopy based on a single-crystal sapphire fiber," Opt. Lett. 36, 1287-1289 (2011)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-36-7-1287


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