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Infrared emission of Tm3+ ions in YVO4 and LiNbO3 crystals pumped with high-power laser diode
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Paper Abstract

Luminescence spectra of Tm3+ ion have been investigated for YVO4 and LiNbO3 crystals by excitation with 798 nm laser diode of high powers in a range from 0.6 W up to 10 W. In addition to the one-photon excited infrared emission bands, emission bands at 700 and 1208 nm are observed in YVO4 by high power excitation and the similar emission bands are observed at 702 and 1216 nm in LiNbO3. It is observed that each of the 700 and 1208 nm emission intensities in YVO4 has quadratic pump-power dependence in a pump power range of 0.6 - 4 W and cubic dependence in 4 - 10 W range. Same result is observed for the 702 and 1216 nm emission in LiNbO3 but the change from the quadratic to cubic dependence appears at 5 W. Discussion is made on the luminescence process for these up-conversion.

Paper Details

Date Published: 29 October 2001
PDF: 8 pages
Proc. SPIE 4595, Photonic Systems and Applications, (29 October 2001); doi: 10.1117/12.446632
Show Author Affiliations
Taiju Tsuboi, Kyoto Sangyo Univ. (Japan)
Yongfeng Ruan, Tianjin Univ. (China)

Published in SPIE Proceedings Vol. 4595:
Photonic Systems and Applications

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