Determination of the absorption cross section of dopants in lithium niobate crystals

Autor:	K. Peithmann, Th. Woike, Karsten Buse, Ulrich Hartwig
Rok vydání:	2006
Předmět:	chemistry.chemical_compound Dopant Absorption spectroscopy chemistry Lithium niobate Doping Absorption cross section Analytical chemistry Ultraviolet light General Materials Science Photorefractive effect Condensed Matter Physics Absorption (electromagnetic radiation)
Zdroj:	Journal of Physics: Condensed Matter. 18:L447-L450
ISSN:	1361-648X 0953-8984
DOI:	10.1088/0953-8984/18/37/l01
Popis:	A method is presented to acquire the absorption cross sections of dopants in photorefractive lithium niobate crystals utilizing doubly doped samples. The absorption cross section of one dopant must be well known. By illumination with ultraviolet light, electrons are transferred from one centre to the other. From the changes of the absorption spectra, the absorption cross section of the centre under investigation is deduced. For a wavelength of λ = 577 nm the absorption cross section of Mn(3+) is determined by this method to be σ(Mn(3+),577 nm)(o) = (9.2 ± 1.3) × 10(-19) cm(2) for ordinarily polarized light. The described method can be adapted to other dopants and host materials.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_dedup___::2eebf16d4680cc9a42bb83b2b542e97b https://doi.org/10.1088/0953-8984/18/37/l01 Zobrazit plný text záznamu