Abstract:
Ultraviolet and violet upconversion signals at 271 nm, 317 nm, 381 nm and 407 nm were observed when an erbium-doped YAG crystal was pumped by an Ar+ laser (488 nm). The dependence of intensity of luminescence emitting from the 4S 3/2 state and the 2P 3/2 state on pump power (I) was experimentally investigated. Changes from I1 down to I 1/2 for the 4S 3/2 state and from I2 down to I1 for the 2P 3/2 state were observed. The upconversion mechanism was discussed by means of the rate equations. It appears that energy-transfer upconversion (ETU) is a dominant process for the Er3+:YAG crystal used in our experiment.
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Received 20 March 2001 and Received in final form 11 July 2001
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Xu, H., Dai, Z. & Jiang, Z. Luminescence characteristics of ultraviolet upconversion from Er 3 +:YAG crystal by Ar + laser (488 nm) excitation. Eur. Phys. J. D 17, 79–83 (2001). https://doi.org/10.1007/s100530170040
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DOI: https://doi.org/10.1007/s100530170040