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Proceedings Paper

Excited state absorption (ESA) spectroscopy measurement of charge transfer bands in doped ionic crystals
Author(s): B. K. Sevastyanov
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Paper Abstract

Possibilities of the excited state absorption (ESA) spectroscopy as the method of investigation of charge transfer (ChT) process in doped ionic crystals are discussed. Temperature dependence of ChT bands of the Cr3+ ions doped crystals suggests that ChT process is mainly donor nature, e.g. [(3d yields 4s or 3d yields (ligand orbital)]. ChT bands positions of Ti3+:Al2O3 and Cr3+:Li2Ge7O15 crystals measured by ESA spectroscopy and two-step photoionization method are approximately the same for each crystal. Wide-band gain of Cr3+:LGO crystal is overlapped by strong ESA band preventing laser effect in the whole luminescence range.

Paper Details

Date Published: 1 March 1995
PDF: 8 pages
Proc. SPIE 2498, Laser Methods of Surface Treatment and Modification: ALT '94 International Conference, (1 March 1995); doi: 10.1117/12.203630
Show Author Affiliations
B. K. Sevastyanov, Institute of Crystallography (Russia)


Published in SPIE Proceedings Vol. 2498:
Laser Methods of Surface Treatment and Modification: ALT '94 International Conference
Alexander M. Prokhorov; Vladimir I. Pustovoy, Editor(s)

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