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Photo-Induced Effects in Mn4+:YAG. Observation of Unusually Efficient Excited State Absorption and a Long–Lived Metastable State

Published online by Cambridge University Press:  10 February 2011

Yanong Han ,
Lee H. Spangler ,
Ralph Hutcheson  and
Randy W. Equall
Yanong Han
Affiliation:
The Optical Technology Center (OpTeC) and The Department of Chemistry, Montana State University, Bozeman, MT 59717, [email protected]
Lee H. Spangler
Affiliation:
The Optical Technology Center (OpTeC) and The Department of Chemistry, Montana State University, Bozeman, MT 59717, [email protected]
Ralph Hutcheson
Affiliation:
Scientific Materials Corp. 310 Icepond Rd. Bozeman, MT 59715
Randy W. Equall
Affiliation:
Scientific Materials Corp. 310 Icepond Rd. Bozeman, MT 59715
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Abstract

The Mn4+ ion has the same d3 electron configuration as Cr3+, but is less stable and can transform to other valence states. Both ions are known to occupy several sites in garnet hosts, giving rise to rather complicated optical spectra and photo-induced phenomena. Here, the spectra of the transient, photo-induced absorption and the emission of Mn4+,:YAG are analyzed over a broad wavelength region (from 450 to 1200nm) and over a wide range of time scales (from ns to minutes). Very large amplitude and extremely broadband excited state absorption are observed. Additionally, a long lifetime, photo-induced species was detected that is likely formed via charge transfer. The demonstrated behavior of this material shows it has potential applications for optical limiting and optical storage.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 597: Symposium PP – Thin Films for Optical Waveguide Devices & Materials … , 1999 , 419
Copyright
Copyright © Materials Research Society 2000

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