Hollow and dielectric waveguides for infrared spectroscopic applications

S. J. Saggese, James Harrington, G. H. Sigel

Research output: Contribution to journalConference article

4 Scopus citations


Solid and hollow waveguides have been employed for spectroscopic and radiometric measurements. Hollow sapphire guides, with a transmission window from 10-17 μm, are are used to detect 20% CO2 in N2. Hollow silica waveguides, with a transmission window from 7-9 μm, are utilized for detecting 100% methane and also for lo temperature radiometric measurements from 30°C to 150°C. The spectroscopic analysis was accomplished by passing the gas down the interior of the hollow guide for an extended pathlength absorption. The hollow silica guide measured the low temperature region with a minimum resolvable temperature difference of less than 1°C.

Original languageEnglish (US)
Pages (from-to)44-53
Number of pages10
JournalProceedings of SPIE - The International Society for Optical Engineering
Publication statusPublished - Jan 1 1991
EventApplied Spectroscopy in Material Science - Los Angeles, CA, USA
Duration: Jan 21 1991Jan 23 1991


All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering

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