T-L SPLITTINGS FROM POLARIZED ATR SPECTRA OF UNIAXIAL CRYSTALS

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Title: T-L SPLITTINGS FROM POLARIZED ATR SPECTRA OF UNIAXIAL CRYSTALS
Creators: Devlin, J. Paul; Pollard, Gary; Frech, Roger
Issue Date: 1970
Publisher: Ohio State University
Abstract: Oriented films of the trigonal alkali metal nitrates, which behave effectively as single crystals, can be grown in optical contact with silicon and Irtran 6 atr elements from the corresponding pure melts. Contrary to earlier $thoughts,^{1}$ spectra from such crystals are not strongly influenced by crystal distortion at the interface. Rather the unusual experimental curves, typified by a nearly complete lack of TE and TM band overlap for the $\nu_{1}$ mode of $NaNO_{3}$ (II), have been found to be predictable using optical parameters generated from a damped oscillator model. Substitution of the empirically calibrated optical constants into Fresnel’s equations for the case in point (unique crystal axis perpendicular to the sample-element interface) yields nearly quantitative agreement with the experimental curves.
Description: $^{1}$R. P. J. Cooney, C. Thayer, P. C. Li, and J. P. Devlin, J. Chem. Phys. 51, 302 (1969).""
Author Institution: Chemistry Department, Oklahoma State University; Department of Chemistry, Oregon State University
URI: http://hdl.handle.net/1811/8423
Other Identifiers: 1970-G-3
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