Abstract

The temperature dependence of the ir reflection spectrum (A₁-type modes) of LiTaO₃ is reported from room temperature up to ~1300 K, that is, 400 K above the ferroelectric–paraelectric phase transition. Results for the isomorphic compound LiNbO₃ are also presented. Certain phonon resonance lines are found asymmetric. Several dielectric function models are discussed. Certain advantages of ir reflectivity spectroscopy are emphasized.

© 1977 Optical Society of America

Submillimeter spectroscopy of TO-phonon mode softening in PbTe

H. Burkhard, G. Bauer, and A. Lopez-Otero
J. Opt. Soc. Am. 67(7) 943-946 (1977)

Optical phonon dynamics of GaAs studied with time-resolved terahertz spectroscopy

G. C. Cho, P. Y. Han, X.-C. Zhang, and H. J. Bakker
Opt. Lett. 25(21) 1609-1611 (2000)

Residual lattice absorption in semiconducting crystals: frequency and temperature dependence

Bernard Bendow, Herbert G. Lipson, and Stanford P. Yukon
Appl. Opt. 16(11) 2909-2913 (1977)

Temperature dependence of multiphonon absorption in zinc selenide

Perry A. Miles
Appl. Opt. 16(11) 2891-2896 (1977)

Far infrared recombination radiation from n-type Hg₁₋xCdxTe

E. Tyssen and G. Nimtz
Appl. Opt. 16(11) 2957-2960 (1977)