An official website of the United States government
Here’s how you know
Official websites use .gov
A .gov website belongs to an official government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.
We have measured the near-normal ordinary ray transmittance and reflectance of crystalline Al2O3 from 1.6 m to 11 m and temperatures from 296 K to 582 K. The absorptance, or emittance, is derived from 1-(T+R), where T and R are the measured transmittance and reflectance. The derived emittance curves are compared with the predictions of a multi-phonon model. Generally, good agreement is found between the measured and predicted results in the region of the multi-phonon absorption edge.
Citation
SPIE series
Pub Type
Journals
Keywords
emittance, infrared, sapphire
Citation
Kaplan, S.
and Hanssen, L.
(1998),
Normal Infrared Spectral Emittance of Al<sub>2</sub>O<sub>3</sub>, SPIE series
(Accessed March 29, 2024)