Investigation of tapered silver / silver halide coated hollow glass waveguides for the transmission of CO 2 laser radiation

Carlos M. Bledt, Daniel V. Kopp, James A. Harrington, Saiko Kino, Yuji Matsuura, Jason M. Kriesel

Research output: Chapter in Book/Report/Conference proceedingConference contribution

8 Citations (Scopus)

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 CO 2 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.

Original languageEnglish
Title of host publicationOptical Fibers and Sensors for Medical Diagnostics and Treatment Applications XII
DOIs
Publication statusPublished - 2012 Jun 13
EventOptical Fibers and Sensors for Medical Diagnostics and Treatment Applications XII - San Francisco, CA, United States
Duration: 2012 Jan 212012 Jan 22

Publication series

NameProgress in Biomedical Optics and Imaging - Proceedings of SPIE
Volume8218
ISSN (Print)1605-7422

Other

OtherOptical Fibers and Sensors for Medical Diagnostics and Treatment Applications XII
Country/TerritoryUnited States
CitySan Francisco, CA
Period12/1/2112/1/22

Keywords

  • Geometrical optics
  • Hollow waveguides
  • Infrared fiber optics
  • Ray tracing analysis
  • Tapered waveguides

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Biomaterials
  • Atomic and Molecular Physics, and Optics
  • Radiology Nuclear Medicine and imaging

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