|Title:||Photorefractive properties of lithium and copper in-diffused lithium niobate crystals||Authors:||Imbrock, Jörg
|Language:||en||Subject (DDC):||DDC::500 Naturwissenschaften und Mathematik||Issue Date:||2002||Publisher:||Soc.||Document Type:||Article||Journal / Series / Working Paper (HSU):||Journal of the Optical Society of America B||Volume:||19||Issue:||8||Page Start:||1822||Page End:||1829||Publisher Place:||Washington, DC||Abstract:||
Near-stoichiometric copper-doped lithium niobate crystals are fabricated by in-diffusion of thin layers of evaporated copper and a subsequent vapor transport equilibration treatment. The crystals are heated in a Li-rich atmosphere to increase the Li content. To determine the photorefractive properties, holographic as well as electrical measurements are performed. Saturation values of the refractive-index changes ΔnS, bulk photovoltaic current densities jphv, photoconductivities σ ph, and holographic sensitivities S are measured for light intensities up to 104 W/m2. Comparison with experimental data of congruent crystals indicates that the specific photoconductivity is 15 times larger after a vapor transport equilibration treatment. The specific bulk photovoltaic coefficient β* is 2 times larger, refractive-index changes are 7 times smaller, and the holographic sensitivity is up to 4 times larger. © 2002 Optical Society of America.
|Organization Units (connected with the publication):||Universität Osnabrück||URL:||https://api.elsevier.com/content/abstract/scopus_id/0141563659||ISSN:||07403224||DOI:||10.1364/JOSAB.19.001822|
|Appears in Collections:||Publications of the HSU Researchers (before HSU)|
Show full item record
checked on May 21, 2022
Items in openHSU are protected by copyright, with all rights reserved, unless otherwise indicated.