Reflective metal-lined capillary waveguides are useful for laser-power delivery or for collecting scattered light in sensing applications. We theoretically examine the multimode propagation of polarized light in large-diameter, metallized, capillary waveguides using a new perturbation technique valid for all waveguide modes. This modeling permits prediction of the collection efficiency of Raman or fluorescent light produced in the waveguide at all angles. These theoretical results are supported by measuring the intensity and angular distribution of collected scattered gas–Raman Stokes power.
© 2010 Optical Society of America
Remote Sensing and Sensors
Original Manuscript: July 19, 2010
Revised Manuscript: September 24, 2010
Manuscript Accepted: October 12, 2010
Published: November 11, 2010
Michael P. Buric, Kevin P. Chen, Joel Falk, and Steven D. Woodruff, "Multimode metal-lined capillaries for Raman collection and sensing," J. Opt. Soc. Am. B 27, 2612-2619 (2010)