Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
7840104 | Journal of Luminescence | 2018 | 11 Pages |
Abstract
Photoconductivity and laser induced white emission were investigated in Yb3+ doped YAG nanoceramics under infrared laser excitation in vacuum. Correlation between the two phenomena was analyzed. Power dependences of both photocurrent and white emission exhibited a threshold behavior characteristic for multiphoton avalanche processes. Comparison between different dopant concentrations showed that with higher Yb3+ content, the magnitudes of broadband emission intensity and photoconductivity rise. Furthermore, the excitation power thresholds for occurrence of the said phenomena decrease with increasing dopant concentration.
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Authors
M. Åukaszewicz, W. StrÄk,