|
Journal of Physical Studies 12(3), Article 3702 [5 pages] (2008)
DOI: https://doi.org/10.30970/jps.12.3702 PIEZOOPTIC EFFECT IN LiNbO3:MgO CRYSTALSB. H. Mytsyk, A. S. Andrushchak, Ya. P. Kost', I. M. Solskii
Karpenko Physico-Mechanical Institute, 5 Naukova St., Lviv, UA--79601,
Ukraine |
 |
The piezooptic coefficients (POC) of the optical path difference and birefringence for pure and MgO doped lithium niobate crystals were determined in the geometry of experiment correspondent to both main crystallographic axes and diagonal directions between these axes. The possible reasons for discrepancies between separate results and literature data are discussed. The piezooptic effect in these crystals is the same in the framework of polarization-optic experiment error as for anisotropy and absolute value of POCs as well as their signs, while temperature stability is high: a change of extreme POCs in the temperature range $\sim 20$-$110^{\circ}$\,C does not exceed 1,8{\%}. The advantage of MgO doped lithium niobate crystals for prospective application in acousto-optic devices consists in their high radiation stability.
PACS number(s): 78.20.Hp