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Polarized Raman spectra of ktioaso4 and isomorphic nonlinear-optical crystals

✍ Scribed by G. H. Watson

Publisher
John Wiley and Sons
Year
1991
Tongue
English
Weight
625 KB
Volume
22
Category
Article
ISSN
0377-0486

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✦ Synopsis

Abstract

Potassium titanyl orthorarsenate KTiOAsO~4~ (KTA) was studied by polarized Raman spectroscopy at room temperature. Group assignments were made by comparison with Raman spectra obtained from the well known isomorphs KTiOPO~4~ (KTP) and RbTiOPO~4~. The Raman features associated with vibrations of Tiο£ΏO bonds provide most of the scattered intensity. Splittings arising from occupation of two distinct sites by each of the AsO~4~ and TiO~6~ groups are observed. Additional evidence for a smaller distortion of the TiO~6~ group in KTA than in KTP is also present in the Raman spectra.

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