Abstract

Solid and hollow waveguides have been employed for spectroscopic and radiometric measurements. Hollow sapphire guides, with a transmission window from 10 - 17 micrometers , are used to detect 20% CO2 in N2. Hollow silica waveguides, with a transmission window from 7 -9 micrometers , are utilized for detecting 100% methane and also for low temperature radiometric measurements from 30 degree(s)C to 150 degree(s)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 degree(s)C.

Talk to us

Join us for a 30 min session where you can share your feedback and ask us any queries you have

Schedule a call

Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.