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Studies on the growth and optical characterization of dysprosium gadolinium oxalate single crystals
Author(s) -
Elizebeth A.,
Thomas V.,
Jose G.,
Jose G.,
Unnikrishnan N. V.,
Joseph C.,
Ittyachen M. A.
Publication year - 2004
Publication title -
crystal research and technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.377
H-Index - 64
eISSN - 1521-4079
pISSN - 0232-1300
DOI - 10.1002/crat.200310156
Subject(s) - dysprosium , gadolinium , oxalate , fluorescence , oxalic acid , single crystal , absorption spectroscopy , absorption (acoustics) , analytical chemistry (journal) , chemistry , radiative transfer , crystal (programming language) , materials science , crystallography , inorganic chemistry , optics , programming language , physics , organic chemistry , chromatography , computer science , composite material
Preparation and optical characterization of dysprosium gadolinium oxalate (DGO) single crystal is reported. The crystals were grown using silica gel technique, by the controlled reaction of rare earth nitrates with oxalic acid. Crystals were characterized using X‐ray powder diffraction, optical absorption and fluorescence studies. Radiative transition probability, fluorescence branching ratio and radiative lifetime of Dy 3+ in the crystal are evaluated by the parameterization of the absorption spectrum by the Judd‐Ofelt theory. The recorded fluorescence spectrum showed two well resolved peaks at 480 nm and 571 nm and are assigned to the transitions from 4 F 9/2 → 6 H 15/2 and 6 H 13/2 of Dy 3+ . Stimulated emission crossection and optical gain of these transitions are also evaluated. (© 2004 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)