Photoluminescence and Features of the Defective Structure of Nominally Pure Lithium Niobate Crystals

Author:

Smirnov Maxim1,Sidorov Nikolay V.1,Teplyakova Natalya A.1,Palatnikov Mikhail1,Syuy Alexander Vjacheslavovich2

Affiliation:

1. Tananaev Institute of Chemistry and Technology of the Federal Research Centre “Kola Science Centre of the Russian Academy of Sciences»

2. Far Eastern State Transport University

Abstract

The photoluminescence intensity in lithium niobate crystals close to the stoichiometric composition is lower than in a congruent crystal was established. An increase in the Li / Nb ratio leads to a shift in the photoluminescence bands to the short-wavelength region of the spectrum and a change in the fundamental absorption edge of the crystals under study. It was shown that, in addition to point defects in the cationic sublattice, complex defects due to the presence of OH groups in the structure can also contribute to photoluminescence.

Publisher

Trans Tech Publications, Ltd.

Subject

Condensed Matter Physics,General Materials Science,Atomic and Molecular Physics, and Optics

Reference17 articles.

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2. Yu. S. Kuzminov, Electro-optical and nonlinear-optical lithium niobate crystal, Nauka, Moscow, 1987. (In Russian).

3. V. Ya. Shur, A. R. Akhmatkhanov, I. S. Baturin, Micro- and nano-domain engineering in lithium niobate, Appl. Phys. Rew. 2, 4 (2015) 040604-0406015. https://doi.org/10.1063/1.4928591.

4. K. Lengyel, A. Peter, L. Kovacs, G. Corradi, L. Palfavi, J. Hebling, M. Unferdorben, G. Dravecz, I. Hajdara, Zs. Szaller, K. Polgar, Growth, defect structure, and THz application of stoichiometric lithium niobate, Appl. Phys. Rew. 2 (2015) 040601-040628. doi.org/10.1063/1.4929917.

5. R.N. Balasanyan, E. S. Vartanyan, V. T. Gabrielyan, L.M. Kazaryan, A method of growing lithium niobate crystals. Auth. certificate №845506 from 06.03.81 Priority from 233.03.79. Open Publishing Formula 27.02.2000. (In Russian).

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