Phase Composition and Stress in Proton Exchanged Waveguide Layers in LiNbO3 and LiTaO3

Authors

  • 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.

DOI:

https://doi.org/10.9734/bpi/nupsr/v5/2074F

Keywords:

Optical waveguides, proton exchange, IR spectroscopy, phase composition, mechanical stress

Abstract

The phase composition of Li1?xHxNbO3 and Li1?xHxTaO3 waveguide layers produced ?t different modifications of the proton exchange (PE) technology and having complex phase composition with different quota of the phases present is analyzed based on their mode and IR spectra. The intrinsic stress caused by crystal lattice deformations at a relatively high level of hydrogen doping in the PE layers is estimated by the optical integral method. An attempt to explain the level of stress is made based on the phase composition of the studied samples. The results contribute to a better understanding of the properties and characteristics of such waveguides.

Published

2021-05-26

How to Cite

M. Kuneva, S. Tonchev, & K. Christova. (2021). Phase Composition and Stress in Proton Exchanged Waveguide Layers in LiNbO3 and LiTaO3. Newest Updates in Physical Science Research Vol. 5, 140–151. https://doi.org/10.9734/bpi/nupsr/v5/2074F

Issue

Newest Updates in Physical Science Research Vol. 5

Section

Chapters