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Copper–lithium ion exchange in LiNbO3

Published online by Cambridge University Press:  31 January 2011

F. Caccavale
Affiliation:
Instituto Nazionale Fisica della Materia, Università di Padova, Dipartimento di Fisica, via Marzolo 8, 35131 Padova, Italy
C. Sada
Affiliation:
Instituto Nazionale Fisica della Materia, Università di Padova, Dipartimento di Fisica, via Marzolo 8, 35131 Padova, Italy
F. Segato
Affiliation:
Instituto Nazionale Fisica della Materia, Università di Padova, Dipartimento di Fisica, via Marzolo 8, 35131 Padova, Italy
L. D. Bogomolova
Affiliation:
Institute of Nuclear Physics, Moscow State University, 119899 Moscow, Russia
N. A. Krasil'nikova
Affiliation:
Institute of Nuclear Physics, Moscow State University, 119899 Moscow, Russia
Yu. N. Korkishko
Affiliation:
Department of Materials and Technology of Solid State Electronics, Moscow Institute of Electronic Technology, 103498, Moscow-Zelenograd, Russia
V. A. Fedorov
Affiliation:
Department of Materials and Technology of Solid State Electronics, Moscow Institute of Electronic Technology, 103498, Moscow-Zelenograd, Russia
T. V. Morozova
Affiliation:
Department of Materials and Technology of Solid State Electronics, Moscow Institute of Electronic Technology, 103498, Moscow-Zelenograd, Russia
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Abstract

Copper-doped LiNbO3 waveguides were prepared by Cu–Li ion-exchange process. Compositional, structural, and optical analyses were performed by secondary ion mass spectrometry, x-ray diffraction, and m-line spectroscopy, respectively. The chemical state of Cu2+ ions was studied by electron paramagnetic resonance, and the results were correlated with structural modification of the LiNbO3 matrix. Copper incorporation in the crystal took place under different regimes, and it induced a lattice rearrangement with the formation of new crystalline phases. Cu2+ ions were surrounded by tetragonally compressed octahedra with rhombic distortions. Cu:LiNbO3 optical waveguides were formed supporting two optical modes.

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Articles
Copyright
Copyright © Materials Research Society 2000

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References

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