Hyper-Raman and Raman scattering in paratellurite TeO2
Article first published online: 4 FEB 2013
Copyright © 2013 John Wiley & Sons, Ltd.
Journal of Raman Spectroscopy
Volume 44, Issue 5, pages 739–745, May 2013
How to Cite
Rodriguez, V., Couzi, M., Adamietz, F., Dussauze, M., Guery, G., Cardinal, T., Veber, P., Richardson, K. and Thomas, P. (2013), Hyper-Raman and Raman scattering in paratellurite TeO2. J. Raman Spectrosc., 44: 739–745. doi: 10.1002/jrs.4251
- Issue published online: 10 MAY 2013
- Article first published online: 4 FEB 2013
- Manuscript Revised: 21 DEC 2012
- Manuscript Accepted: 21 DEC 2012
- Manuscript Received: 29 OCT 2012
- Advanced Materials in Aquitaine
- National Science Foundation
- TO–LO modes;
Raman spectra of the tetragonal structure of paratellurite TeO2 have been revisited avoiding anomalous polarization-selection-rules violations previously observed and due to optical activity. We present a complementary hyper-Raman scattering study of paratellurite. Wavenumber and symmetry assignments are given for all expected 21 Raman active optical branches, except one LO component (out of the eight expected TO–LO pairs) of the polar doublet E modes. Also, the four expected hyper-Raman active A2 (TO) modes have been observed. Moreover, we have observed a strong Kleinman-disallowed hyper-Rayleigh signal, which is tentatively assigned as a first evidence of hyper-Rayleigh optical activity. Copyright © 2013 John Wiley & Sons, Ltd.