Infrared absorption in low-loss KCl single crystals near 10.6 μm
- 1 September 1974
- journal article
- Published by AIP Publishing in Journal of Applied Physics
- Vol. 45 (9) , 3959-3964
- https://doi.org/10.1063/1.1663896
Abstract
The infrared absorption in KCl single crystals near 10.6 μm has been studied using calorimetric techniques with fixed-frequency and tunable CO2 laser sources. By use of crystals grown in a reactive CCl4 atmosphere, with surfaces carefully prepared by chemical polishing, it is possible to obtain absorption coefficients of 0.0002 cm−1 or less in samples several centimeters thick. This residual absorption is composed of a surface and a bulk part. It is possible to show that the bulk absorption approaches the estimated intrinsic limit of 0.00008 cm−1. An absorption band near 9.8 μm is present in all samples examined and appears to be largely associated with the surface.This publication has 15 references indexed in Scilit:
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