Relationships between crystal lattice parameters and optical properties of proton-exchanged lithium niobate waveguides

Vyacheslav A. Fedorov; Yuri N. Korkishko

doi:10.1117/12.205039

17 March 1995 Relationships between crystal lattice parameters and optical properties of proton-exchanged lithium niobate waveguides

Vyacheslav A. Fedorov, Yuri N. Korkishko

Author Affiliations +

Proceedings Volume 2401, Functional Photonic Integrated Circuits; (1995) https://doi.org/10.1117/12.205039
Event: Photonics West '95, 1995, San Jose, CA, United States

Abstract

It has been shown that the lattice-misfit-induced strains in H:LiNbO₃ waveguiding layers strongly modify the phase diagram HNbO₃-LiNbO₃ obtained for powders. Depending on exchange and annealing conditions and crystal cuts, at least the six phases (alpha) , (beta) -, (gamma) -, (delta) -, (zetz) - and (eta) - H_xLi_1-xNbO₃ can exist in single crystal proton-exchanged layers. The high and low temperature modifications were obtained for (alpha) and (beta) - phases. The relationships between crystal lattice parameters of unstrained H_xLi_1-xNbO₃ solid solutions and extraordinary refractive index change have been experimentally determined for the high and low temperature modifications of (alpha) and (beta) phases in proton-exchanged lithium niobate waveguides.

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Vyacheslav A. Fedorov and Yuri N. Korkishko "Relationships between crystal lattice parameters and optical properties of proton-exchanged lithium niobate waveguides", Proc. SPIE 2401, Functional Photonic Integrated Circuits, (17 March 1995); https://doi.org/10.1117/12.205039

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