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The Temperature Dependence of an Absorption Feature in the Vicinity of the Long Wavelength Transmission Cutoff in ZnSe

Volume 32, Number 2 (April 1978) Page 164-167

Castle, P.M.; Toth, V.A.


The temperature dependence of the infrared absorption spectrum of ZnSe was measured by using a variable temperature, liquid nitrogen cooled, absorption cell interfaced with a Fourier transform infrared spectrometer. Absorption difference spectra were obtained as a function of temperature by using the on-board computing facilities of the spectrometer coupled with its data storage capabilities. The temperature dependence of the absorption feature, which extends from about 450 to 800 cm−1, is shown to be consistent with a two phonon interaction as have been previously suggested.