Crystal Research and Technology
Cryst. Res. Technol. 36 (2001) 449 - Abstract -

Zh. X Cheng, Sh. J. Zhang, J. R. Han, H. Ch. Chen, Q. M. Lu*, H. C. Guo**

The state Key Lab of Crystal Materials, Shandong University, Jinan, P.R.China
*College of chemistry and Environment, Shandong University, Jinan, P.R.China
**Physics Department, Peking University, Beijing, P.R.China

Optical Parameters of NaY(WO4)2 Crystals Doped with Pr and Ho

Rare-earths (Pr, Ho) doped double tungstates NaY(WO4)2 crystals were prepared by using Czochralski (CZ) pulling method. Their absorption spectra have been measured in the region 300-2000nm at room temperature. A band gap of eigentransition of 3.92eV was obtained. The three phenomenological parameters were calculated through fitting of the calculated and measured oscillator strengths. J-O theory was used to evaluate the spontaneous emission probabilities, stimulated emission cross sections, branch ratios and energy level lifetimes of some useful transitions of Ho3+ ions in NaY(WO4)2 crystals.

Keywords: NaY(WO4)2 crystal, Pr3+,Ho3+ions, Judd-Ofelt theory


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