|Title:||Photorefractive properties of undoped lithium tantalate crystals for various composition||Authors:||Holtmann, F.
|Language:||en||Subject (DDC):||DDC::500 Naturwissenschaften und Mathematik||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||URL:||https://api.elsevier.com/content/abstract/scopus_id/11044236769||ISSN:||00218979||DOI:||10.1063/1.1805189|
|Appears in Collections:||Publications of the HSU Researchers (before HSU)|
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