Switching of emissivity and photoconductivity in highly doped Yb3+: Y2 O3 and Lu2 O3 ceramics

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Erscheinungsjahr:
2007
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Text
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  • Reversible jump of thermal emission accompanied with jump of photocurrent is observed in highly doped Yb3+: Y2 O3 and Lu2 O3 bulk ceramics pumped at 940 nm wavelength. In contrast, when these materials are heated with a C O2 laser at 10.6 μm wavelength, only a gradual increase of thermal emission and photoconductivity are observed up to the melting point. These results are interpreted as a ytterbium mediated, photoassisted avalanche of thermal emission. © 2007 American Institute of Physics.
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  • info:eu-repo/semantics/closedAccess
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Forschungsinformationssystem der UHH
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oai:www.edit.fis.uni-hamburg.de:publications/fc60723a-46d3-487a-b19a-0c4711ff343c