Piezo-optic coefficients of MgO-doped LiNbO3 crystals

Author(s)
Bogdan G Mytsyk, Anatoliy S Andrushchak, Nataliya M Demyanyshyn, Yaroslav P Kost', Andri V Kityk, Pietro Mandracci, Wilfried Schranz
Abstract

We describe an interferometric technique suitable for determination of piezo-optic coefficients (POCs) in crystals. The method considers real nonparallelism of measured samples, thereby improving the measuring precision of POCs significantly. Corresponding equations are derived for the interferometric half-wave stress method. Using this technique we have determined a complete set of POCs of pure and MgO -doped LiNbO3 crystals. The reliability of the data has been confirmed by comparing the effective POCs expressed through the combinations of measured POCs and the effective POCs determined independently using highly precise optical birefringence measurements. Pure and MgO -doped LiNbO3 crystals reveal nearly the same magnitudes of POCs. However, LiNbO3 :MgO exhibits about 4 times higher resistance with respect to powerful light radiation, making it more suitable for application in acousto-optic devices that deal with superpowerful laser radiation.

Organisation(s)
Physics of Functional Materials
External organisation(s)
University of Cambridge, Czestochowa University of Technology (CUT), Lviv Polytechnic National University, Karpenko Physico-Mechanical Institute, Politecnico di Torino
Journal
Applied Optics
Volume
48
Pages
1904-1911
No. of pages
8
ISSN
0003-6935
DOI
https://doi.org/10.1364/AO.48.001904
Publication date
2009
Peer reviewed
Yes
Austrian Fields of Science 2012
103021 Optics
Portal url
https://ucris.univie.ac.at/portal/en/publications/piezooptic-coefficients-of-mgodoped-linbo3-crystals(1201e764-edbd-4308-a7be-c2871cfecb68).html