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Abstract Photoconductivity and laser induced white emission were investigated in Yb 3+ doped YAG nanoceramics under infrared laser excitation in vacuum. Correlation between the two phenomena was analyzed. Power dependences… Click to show full abstract
Abstract Photoconductivity and laser induced white emission were investigated in Yb 3+ 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 Yb 3+ 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.
Journal Title: Journal of Luminescence
Year Published: 2018
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