Optical characterization of Ho3+ions in LiNbO3and in LiNbO3:MgO crystals
- 1 January 1994
- journal article
- Published by IOP Publishing in Journal of Physics: Condensed Matter
- Vol. 6 (5) , 1065-1078
- https://doi.org/10.1088/0953-8984/6/5/017
Abstract
A detailed study of the optical absorption and emission spectra of Ho3+ ions in LiNbO3 crystals in the visible spectral region is presented. The positions of the crystal-field levels are given for the 5F5, 5S2+5F4, 5F3 and 5G6 multiplets of Ho3+ ions. The type and character of the Stark transitions have been determined by polarized absorption measurements. Optical absorption measurements and site-selective spectroscopy have shown the existence of two crystal-held sites for Ho3+ in the LiNbO3 matrix. The effect of co-doping with MgO on the optical spectra of Ho3+ ions has also been studied and a new Ho3+ Site perturbed by the presence of a neighbouring Mg2+ ion is evidenced.Keywords
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