NDLI: Quenching effects on crystallographic and optical properties of proton exchanged waveguides on Z-cut lithium niobate

Content Provider	IEEE Xplore Digital Library
Author	Shevtsov, D.I. Azanova, I.S. Taysin, I.F. Kalabin, I.E. Atuchin, V.V. Volyntsev, A.B.
Copyright Year	2004
Description	Author affiliation: Perm Sci. Instrument-Making Co., Russia (Shevtsov, D.I.; Azanova, I.S.; Taysin, I.F.)
Abstract	The formation and decay of high temperature phases in H/sub x/Li/sub 1-x/NbO/sub 3/ waveguide layers have been studied by means of waveguide mode spectroscopy and X-ray rocking curve measurement. The hydrogen doped layers with x/spl sim/0.47 (different x) in Z-cut LiNbO/sub 3/ were created by proton exchange reaction in melt benzoic acid. The high temperature phases were frozen by quenching from T=200/spl deg/C. It has been shown that these phases possess /spl sim/9% higher refractive index and /spl sim/16% lower deformation in reference to H/sub x/Li/sub 1-x/NbO/sub 3/ phase equilibrium at room conditions. The relaxation of the high temperature phase to equilibrium one has been traced at T=100/spl deg/C. It is shown now that the phase transitions between the equilibrium and high temperature phases in H/sub x/Li/sub 1-x/NbO/sub 3/ layers at high x, earlier detected by the refractive index variations, are also accompanied by drastic variations of crystal structure of the layer. The deformation change induced by the reversible transition is as high as /spl sim/16% in reference to deformation created by doping. It may be supposed that the structural transformations are governed by some configuration redistribution of the protons within the possible crystal lattice positions.
Starting Page	164
Ending Page	168
File Size	955784
Page Count	5
File Format	PDF
ISBN	0780383834
DOI	10.1109/KORUS.2004.1555710
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2004-06-26
Publisher Place	Russia
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Optical waveguides Crystallography Protons Lithium niobate Temperature Niobium compounds Refractive index Optical refraction Optical variables control Spectroscopy
Content Type	Text
Resource Type	Article

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