Direct measurement of thermal emission from a Fabry-Perot cavity resonator

Liping Wang, S. Basu, Z. M. Zhang

Research output: Contribution to journalArticle

38 Citations (Scopus)

Abstract

There have been growing interests in selective control of thermal emission by using micro/nanostructures. The present study describes direct measurements of infrared thermal emission at elevated temperatures of an asymmetric Fabry-Perot resonator at variable angles for each polarization. The multilayered structure mainly contains a SiO 2 optical cavity sandwiched between a thick (opaque) Au film and a thin Au film. Metallic adhesive and diffusion-barrier layers were deposited on a Si substrate before depositing the thick Au film. A dielectric protection layer was deposited atop the thin Au film to prevent oxidation at high temperatures. A SiC wafer was used as the reference to test the emittance measurement facility, which includes a heated sample holder, a blackbody source, mirror assembly, a polarizer, and a Fourier-transform infrared spectrometer with different detectors. The measured emittance spectra of the Fabry-Perot structure exhibit peak broadening and shifting as temperature increases; the mechanisms are elucidated by comparison with theoretical modeling.

Original languageEnglish (US)
Article number072701
JournalJournal of Heat Transfer
Volume134
Issue number7
DOIs
StatePublished - 2012
Externally publishedYes

Fingerprint

Cavity resonators
cavity resonators
thermal emission
emittance
infrared spectrometers
barrier layers
holders
thin films
polarizers
adhesives
thick films
Thin films
Infrared spectrometers
Diffusion barriers
assembly
resonators
wafers
mirrors
Thick films
Temperature

Keywords

  • high temperature
  • thermal emission
  • thin films
  • wave interferences

ASJC Scopus subject areas

  • Mechanical Engineering
  • Mechanics of Materials
  • Materials Science(all)
  • Condensed Matter Physics

Cite this

Direct measurement of thermal emission from a Fabry-Perot cavity resonator. / Wang, Liping; Basu, S.; Zhang, Z. M.

In: Journal of Heat Transfer, Vol. 134, No. 7, 072701, 2012.

Research output: Contribution to journalArticle

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