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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Vol. 51, Iss. 12 — Apr. 20, 2012
  • pp: 2023–2025

Angular output of hollow, metal-lined, waveguide Raman sensors

Stephen Biedrzycki, Michael P. Buric, Joel Falk, and Steven D. Woodruff  »View Author Affiliations


Applied Optics, Vol. 51, Issue 12, pp. 2023-2025 (2012)
http://dx.doi.org/10.1364/AO.51.002023


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Abstract

Hollow, metal-lined waveguides used as gas sensors based on spontaneous Raman scattering are capable of large angular collection. The collection of light from a large solid angle implies the collection of a large number of waveguide modes. An accurate estimation of the propagation losses for these modes is required to predict the total collected Raman power. We report a theory/experimental comparison of the Raman power collected as a function of the solid angle and waveguide length. New theoretical observations are compared with previous theory appropriate only for low-order modes. A cutback experiment is demonstrated to verify the validity of either theory. The angular distribution of Raman light is measured using aluminum and silver-lined waveguides of varying lengths.

© 2012 Optical Society of America

OCIS Codes
(290.5860) Scattering : Scattering, Raman
(300.6450) Spectroscopy : Spectroscopy, Raman

ToC Category:
Scattering

History
Original Manuscript: September 28, 2011
Revised Manuscript: January 12, 2012
Manuscript Accepted: January 14, 2012
Published: April 16, 2012

Citation
Stephen Biedrzycki, Michael P. Buric, Joel Falk, and Steven D. Woodruff, "Angular output of hollow, metal-lined, waveguide Raman sensors," Appl. Opt. 51, 2023-2025 (2012)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-51-12-2023


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References

  1. M. P. Buric, K. P. Chen, J. Falk, and S. D. Woodruff, “Metal-lined capillaries for efficient Raman gas sensing,” Conference on Lasers and Electro-Optics, San Jose, California, 18–21 May 2010, Paper CFA5.
  2. M. P. Buric, K. P. Chen, J. Falk, R. Velez, and S. D. Woodruff, “Raman sensing of fuel gases using a reflective coating capillary optical fiber,” SPIE Symposium on Defense Security + Sensing, 15 April 2009.
  3. E. A. J. Marcatili and R. A. Schmeltzer, “Hollow metallic and dielectric waveguides for long distance optical transmission and lasers,” Bell Syst. Tech. J. 43, 1783–1809 (1964).
  4. J. P. Crenn, “Optical study of the EH11 mode in a hollow circular oversized waveguide and Gaussian approximation of the far-field pattern,” Appl. Opt. 23, 3428–3433 (1984). [CrossRef]
  5. M. P. Buric, K. P. Chen, J. Falk, and S. D. Woodruff, “Multimode metal-lined capillaries for Raman collection and sensing,” J. Opt. Soc. Am. B 27, 2612–2619 (2010). [CrossRef]
  6. S. Biedrzycki, M. P. Buric, J. Falk, and S. D. Woodruff, “Optical efficiency in metal-lined capillary waveguide Raman sensors,” SPIE Symposium on Defense Security + Sensing, 29 April 2011.

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