Disorder and the optical spectroscopy of Cr3+-doped glasses. II. Glasses with high and low ligand fields
- 27 May 1991
- journal article
- Published by IOP Publishing in Journal of Physics: Condensed Matter
- Vol. 3 (21), 3825-3840
- https://doi.org/10.1088/0953-8984/3/21/015
Abstract
For pt. I see ibid., vol.3, p.1915 (1991). The paper reports spectroscopic studies of Cr3+ ions in fluorozirconate. fluoride, borate and telluride glasses in which the average strength of the octahedral crystal field Dq/B varies from 1.6 to 2.4. The emission spectra are shown to be inhomogeneously broadened by disorder. Non-exponential decay of the emission intensity following pulsed excitation is another signature of the extensive disorder in these glasses. The large density of states of two-level systems is shown to account for the larger-than-expected homogeneous width of the R line in lithium borate and potassium borate glasses.Keywords
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