Dependence of the refractive indices in LiNbO3:Cr crystals doped with HfO2

Cantelar, E. and Torchia, G.A. and Bermudez, V. and Jaque, D. and Sanz-Garcia, J.A. and Lifante, G. and Han, T.P.J. and Jaque, F. (2005) Dependence of the refractive indices in LiNbO3:Cr crystals doped with HfO2. Materials Science Forum, 480-481. pp. 423-428. ISSN 1662-9760

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Abstract

The dependence of the refractive indices, absorption edge and optical damage in congruent HfO2-doped LiNbO3 crystal are reported. A small amount of Cr3+ ions (0.1 mol%) was introduced in the doped crystals as optical probe. The experimental data indicates that the extraordinary and ordinary indices depend on the Hf4+ ions concentration showing a singularly for a dopant level of ~2.7 mol%. The dependence of the absorption edge also shows a transition region at this Hf4+ concentration. The distortion of the transmitted light through samples doped with different concentrations of Hf4+ ions indicates that an inhibition of optical damages is achieved at above 3 mol% of dopant. A charge compensation mechanism is proposed to explain the role of the Hf4+ ions for the observed experimental result.

Author(s):Cantelar, E., Torchia, G.A., Bermudez, V., Jaque, D., Sanz-Garcia, J.A., Lifante, G., Han, T.P.J. and Jaque, F.
Item type:Article
ID code:51210
Keywords:absorption coefficients, charge compensation, chromium, doping profiles, hafnium compounds, impurity distribution, lithium compounds, refractive index, Physics, Mechanics of Materials, Materials Science(all), Mechanical Engineering, Condensed Matter Physics
Subjects:Science > Physics
Department:Faculty of Science > Physics
Depositing user: Pure Administrator
Date deposited:23 Jan 2015 05:31
Last modified:08 Feb 2019 03:27
URI:https://strathprints.strath.ac.uk/id/eprint/51210
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