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Ferroelectrics Letters Section Volume 47, 2020 - Issue 1-3
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Articles

Phase composition of channel proton-exchanged waveguides in different near-congruent LiNbO3

Sergey M. KostritskiiRPC Optolink, STMP, Zelenograd, Moscow, Russia; Correspondence[email protected]
ORCID Iconhttp://orcid.org/0000-0002-5431-9979View further author information
ORCID Icon,
Yuri N. KorkishkoRPC Optolink, STMP, Zelenograd, Moscow, Russia; View further author information
,
Vyacheslav A. FedorovRPC Optolink, STMP, Zelenograd, Moscow, Russia; View further author information
,
Oleg G. SevostyanovInstitute of Basic Sciences, Department of Experimental Physics, Kemerovo, Russia; View further author information
,
Irina M. ChirkovaInstitute of Basic Sciences, Department of Experimental Physics, Kemerovo, Russia; View further author information
,
Edvard KokanyanInstitute for Physical Research, Non-Linear Crystals Lab, Ashtarak, Armenia; View further author information
&
Michel AillerieCentrale Supеlec, LMOPS, Équipe MCS-PV, University of Lorraine, Metz, FranceView further author information
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Pages 9-15 | Received 06 Nov 2019, Accepted 14 Jul 2020, Published online: 31 Aug 2020
 
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Abstract

Micro-Raman spectroscopy and method of Raman data calibration are proposed for the quantitative study of the proton-exchanged LiNbO3 channel waveguides, which contain the different HxLi1–xNbO3 phases, depending on the fabrication conditions. The spectroscopic parameters, phase composition and electro-optic properties of these waveguides have been found to be depending on the small variation of stoichiometry in the near-congruent lithium niobate substrates used for waveguides fabrication.

Additional information

Funding

This work was supported partially by the Russian Foundation for Basic Research under Grant № 18-52-05012.

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