Electro-optic and dielectric properties of Hafnium-doped congruent lithium niobate crystals |
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Authors: | M Abarkan M Aillerie J P Salvestrini M D Fontana E P Kokanyan |
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Institution: | (1) Laboratoire Matériaux Optiques, Photonique et Systèmes, Université Paul Verlaine—Metz and Supélec, UMR CNRS 7132, 2 rue E. Belin, 57070 Metz, France;(2) Institute for Physical Research, National Academy of Sciences of Armenia, 378410 Ashtarak-2, Armenia;(3) Faculté polydisciplinaire de Taza, Université Sidi Mohammed Ben Abdallah de Fès, BP 1223, Taza-Gare, Morocco |
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Abstract: | We report the optical and dielectric properties in hafnium (Hf)-doped lithium niobate (LN) crystals. We investigated samples
of congruent composition with various doping concentration varying from 0 to 8 mol%. The clamped and unclamped values of the
electro-optic coefficient r
22 of Hf-doped LN and the corresponding dielectric permittivity as well, have been experimentally determined and compared with
the results obtained in undoped congruent LN crystals. We show that the electro-optic and dielectric properties are only slightly
affected by the introduction of hafnium ions, and therefore Hf-doped LN has the advantage of low photorefractive damage compared
with the undoped congruent LN. |
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Keywords: | PACS" target="_blank">PACS 78 20 J 77 22 77 84 |
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