Crystal Research and Technology
Cryst. Res. Technol. 37 (2002) 1318 - Abstract -

Z. X. Cheng, X. J. Yi, J. R. Han, H. C. Chen, X. L. Wang*, H. K. Liu*, S. X. Dou*, F. Song**, H. C. Guo**

The State Key Lab of crystal materials, Shandong University, Jinan 250100, P.R.China
*Institute for Superconductor and Electronics Materials, University of Wollongong, NSW, 2522, Australia
**Phononics Center, Physics College of Nankai University; Tanjin, P.R.China

Up-conversion luminescence of ytterbium and thulium co-doped potassium yttrium double tungstate crystal

Thulium and ytterbium co-doped double tungstate Yb3+,Tm3+: NaY(WO4)2 single crystals were prepared by using RF-heating Czochralski (CZ) pulling method. Its polarized transmittance spectra have been recorded in the region of 290-2000nm at room temperature. The energy levels transitions were assigned to the corresponding absorption line. The up-conversion luminescences at 793nm and 475nm were measured when the sample were pumped by 972nm LD and the energy transfer mechanism between Yb3+ and Tm3+ ions was analyzed.

Keywords: luminescence, ytterbium, thulium


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