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Proceedings Paper

Investigation of tapered silver / silver halide coated hollow glass waveguides for the transmission of CO2 laser radiation
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Paper Abstract

The present study focuses on the theoretical and practical infrared radiation propagation properties of tapered silver / silver iodide coated Hollow Glass Waveguides (HGWs). Tapered HGWs with inner diameters ranging from 300 μm to 650 μm with a linear taper increasing at an approximate rate of 1.5 μm/cm were fabricated and optimized for low-loss transmission of CO2 laser radiation at of 10.6 μm. The theoretical losses in these tapered silver / silver iodide coated HGWs are calculated for light transmitted from the big to the small and vice versa. Theoretical calculations used in this study are based on ray-optics. Experimental loss measurements are likewise presented, along with the calculated and measured output beam divergence. The experimental bending losses of the tapered HGWs are studied and compared with those measured and for those for non-tapered, straight bore sizes from 300 to 700 μm. Experimental losses for tapered Ag/AgI HGWs ranged from 0.732 - 1.340 dB/m depending on configuration and bending radius.

Paper Details

Date Published: 17 February 2012
PDF: 9 pages
Proc. SPIE 8218, Optical Fibers and Sensors for Medical Diagnostics and Treatment Applications XII, 821802 (17 February 2012); doi: 10.1117/12.912201
Show Author Affiliations
Carlos M. Bledt, Rutgers Univ. (United States)
Daniel V. Kopp, Rutgers Univ. (United States)
James A. Harrington, Rutgers Univ. (United States)
Saiko Kino, Tohoku Univ. (Japan)
Yuji Matsuura, Tohoku Univ. (Japan)
Jason M. Kriesel, Opto-Knowledge Systems, Inc. (United States)


Published in SPIE Proceedings Vol. 8218:
Optical Fibers and Sensors for Medical Diagnostics and Treatment Applications XII
Israel Gannot, Editor(s)

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