Title: | Photorefractive properties of undoped lithium tantalate crystals for various composition | Authors: | Holtmann, F. Imbrock, J. Bäumer, Ch. Hesse, H. Krätzig, E. Kip, Detlef |
Language: | eng | Issue Date: | Dec-2004 | Publisher: | American Inst. of Physics | Document Type: | Article | Journal / Series / Working Paper (HSU): | Journal of applied physics : AIP's archival journal for significant new results in applied physics | Volume: | 96 | Issue: | 12 | Page Start: | 7455 | Page End: | 7459 | Publisher Place: | Melville, NY | Abstract: | Lithium tantalate crystals of compositions ranging from 48.3 mol % to 50.0 mol % lithium oxide are fabricated by vapor transport equilibration. Light-induced refractive index changes of the crystals are investigated with holographic methods at usual cw-laser intensities (≈ 105 W/m 2) and with a single focused laser beam at high light intensities up to 2 × 107 W/m2. In stoichiometric crystals the index changes are reduced by more than two orders of magnitude when compared with congruently melting ones. Simultaneously, the normalized photoconductivity σph/I, where I is the light intensity, increases by nearly two orders of magnitude. Therefore, stoichiometric lithium tantalate is an attractive material for applications such as frequency conversion via quasi-phase matching. © 2004 American Institute of Physics. |
Organization Units (connected with the publication): | Technische Universität Clausthal | ISSN: | 0021-8979 | Publisher DOI: | 10.1063/1.1805189 |
Appears in Collections: | 6 - Publication references (without fulltext) of your publications before HSU |
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