Phase Composition and Stress in Proton Exchanged Waveguide Layers in LiNbO3 and LiTaO3 | Chapter 9 | Newest Updates in Physical Science Research Vol. 5

 Based on their mode and IR spectra, the phase composition of Li_1-xH_xNbO₃ and Li_1-xH_xTaO₃ waveguide layers created at various variations of the proton exchange (PE) technology and having complicated phase composition with varied quotas of the phases present is investigated. The optical integral approach is used to calculate the intrinsic stress induced by crystal lattice deformations at a rather high amount of hydrogen doping in the PE layers. The phase composition of the analysed samples is used to try to explain the level of stress. The findings aid in a better understanding of the features and characteristics of waveguides of this type.

Author (s) Details

M. Kuneva
Institute of Solid State Physics – BAS, 72 Tzarigradkso Chaussee Blvd., 1784 Sofia, Bulgaria.

S. Tonchev
Institute of Solid State Physics – BAS, 72 Tzarigradkso Chaussee Blvd., 1784 Sofia, Bulgaria.

K. Christova
Institute of Solid State Physics – BAS, 72 Tzarigradkso Chaussee Blvd., 1784 Sofia, Bulgaria.

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