MICROSTRUCTURE AND RELAXATION OF RAMAN SELECTION-RULES IN PROTON-EXCHANGED LITHIUM-NIOBATE

Authors
ZHANG MS YIN Z WU XL FENG D CHEN S
Citation
Ms. Zhang et al., MICROSTRUCTURE AND RELAXATION OF RAMAN SELECTION-RULES IN PROTON-EXCHANGED LITHIUM-NIOBATE, Journal of the Korean Physical Society, 32, 1998, pp. 146-148
Citations number
11
Categorie Soggetti
Physics
Journal title
Journal of the Korean Physical Society → ACNP
ISSN journal
03744884
Volume
32
Year of publication
1998
Part
1
Supplement
S
Pages
146 - 148
Database
ISI
SICI code
0374-4884(1998)32:<146:MARORS>2.0.ZU;2-M
Abstract
The lattice dynamics and microstructures in the proton-exchanged LiNbO 3 are studied. Raman spectra of proton exchange time dependence shows that the mixed-mode effects: A and E modes occur in the scattering geo metries for E and A modes, attributed to photovoltaic effects and inte rnal strains, respectively. Fifty times lower intensity of Raman lines were found in LN:H+ Raman spectra with 12 h proton exchange. The latt ice distortion is also recorded with the a-axis elongation and the c-a xis shortening.