Two-color infrared thermometer for low-temperature measurement using a hollow glass optical fiber

Ward Small IV, Peter M. Celliers, Luiz B. Da Silva, Dennis L Matthews, Barbara A. Soltz

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

6 Citations (Scopus)

Abstract

A low-temperature fiber optic two-color infrared thermometer has been developed. Radiation from a target is collected via a single 700 micrometer-bore hollow glass optical fiber coated with a metallic/dielectric layer on the inner surface, simultaneously split into two paths and modulated by a gold-coated reflective chopper, and focused onto two thermoelectrically cooled mid-infrared HgCdZnTe photoconductors by 128.8 mm-radius gold-coated spherical mirrors. The photoconductors have spectral bandpasses of 2 - 6 micrometer and 2 - 12 micrometer, respectively. The modulated detector signals are recovered using lock-in amplification. The two signals are calibrated using a blackbody (emissivity equal to 1) of known temperature, and exponential fits are applied to the two resulting voltage versus temperature curves. Using the two calibration equations, a computer algorithm calculates the temperature and emissivity of a target in real time, taking into account reflection of the background radiation field from the target surface.

Original languageEnglish (US)
Title of host publicationProceedings of SPIE - The International Society for Optical Engineering
Pages115-120
Number of pages6
Volume2977
DOIs
StatePublished - 1997
Externally publishedYes
EventSpecialty Fiber Optics for Biomedical and Industrial Applications - San Jose, CA, United States
Duration: Feb 10 1997Feb 10 1997

Other

OtherSpecialty Fiber Optics for Biomedical and Industrial Applications
CountryUnited States
CitySan Jose, CA
Period2/10/972/10/97

Fingerprint

Thermometer
Thermometers
Temperature Measurement
thermometers
glass fibers
Temperature measurement
Glass fibers
Optical Fiber
temperature measurement
micrometers
Optical fibers
hollow
Emissivity
Infrared
photoconductors
optical fibers
Color
Infrared radiation
emissivity
color

Keywords

  • Blackbody
  • Emissivity
  • Hollow glass waveguide
  • Infrared
  • Lock-in amplification
  • Radiation thermometry

ASJC Scopus subject areas

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

Cite this

Small IV, W., Celliers, P. M., Da Silva, L. B., Matthews, D. L., & Soltz, B. A. (1997). Two-color infrared thermometer for low-temperature measurement using a hollow glass optical fiber. In Proceedings of SPIE - The International Society for Optical Engineering (Vol. 2977, pp. 115-120) https://doi.org/10.1117/12.271014

Two-color infrared thermometer for low-temperature measurement using a hollow glass optical fiber. / Small IV, Ward; Celliers, Peter M.; Da Silva, Luiz B.; Matthews, Dennis L; Soltz, Barbara A.

Proceedings of SPIE - The International Society for Optical Engineering. Vol. 2977 1997. p. 115-120.

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

Small IV, W, Celliers, PM, Da Silva, LB, Matthews, DL & Soltz, BA 1997, Two-color infrared thermometer for low-temperature measurement using a hollow glass optical fiber. in Proceedings of SPIE - The International Society for Optical Engineering. vol. 2977, pp. 115-120, Specialty Fiber Optics for Biomedical and Industrial Applications, San Jose, CA, United States, 2/10/97. https://doi.org/10.1117/12.271014
Small IV W, Celliers PM, Da Silva LB, Matthews DL, Soltz BA. Two-color infrared thermometer for low-temperature measurement using a hollow glass optical fiber. In Proceedings of SPIE - The International Society for Optical Engineering. Vol. 2977. 1997. p. 115-120 https://doi.org/10.1117/12.271014
Small IV, Ward ; Celliers, Peter M. ; Da Silva, Luiz B. ; Matthews, Dennis L ; Soltz, Barbara A. / Two-color infrared thermometer for low-temperature measurement using a hollow glass optical fiber. Proceedings of SPIE - The International Society for Optical Engineering. Vol. 2977 1997. pp. 115-120
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