Title :
The effect of high temperature heat treatment on the directional homogeneity of LiNbO3 crystal studied through transmission ellipsometry
Author :
Asikoglu, A. ; Yukselici, M.H. ; Bulut, D. ; Sugak, D. ; Solskii, I. ; Syvorotka, I. ; Zhydachevskii, Ya. ; Ubizskii, S. ; Buryy, O.
Abstract :
Pure and doped lithium niobate (LiNbO3) crystals heat treated at temperatures up to 1000°C under reduced/oxidized atmospheres were studied through normal incidence transmission ellipsometry in which a laser with a wavelength of 632.8 nm was employed. The differences in refractive indices between two orthogonal directions were calculated. Results show that the birefringence varies depending on thermal history of the samples.
Keywords :
Atmosphere; Crystals; Ellipsometry; Heat treatment; Heating; Lasers; Lithium niobate; heat treatment; lithium niobate; photo refractive crystals; transmission ellipsometry;
Conference_Titel :
Oxide Materials for Electronic Engineering (OMEE), 2012 IEEE International Conference on
Conference_Location :
Lviv, Ukraine
Print_ISBN :
978-1-4673-4491-3
DOI :
10.1109/OMEE.2012.6464805
