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Phonon-assisted mechanisms and concentration dependence of Tm3+ blue upconversion luminescence in codoped NaY(WO4)2 crystals

Journal Article


Abstract


  • Optical parameters of NaY(WO4)2 crystals were calculated from absorption spectra with Judd-Ofelt theory. Intensive infrared-to-visible frequency upconversion has been discovered and investigated under a 974 nm CW laser diode excitation at room temperature. The bright blue upconversion fluorescence emission is analysed in detail. The optimal concentration of Tm3+, which is about 1 at% for a Yb3+ concentration of 10 at% for the blue emission in the crystals, is much higher than that in other hosts. The experimental results and theoretical analysis suggest that NaY(WO4)2 with high phonon energy is most probably an even more promising crystal than fluoride. © 2006 IOP Publishing Ltd.

Publication Date


  • 2006

Citation


  • Su, J., Song, F., Tan, H., Han, L., Zhou, F., Tian, J., . . . Chen, H. (2006). Phonon-assisted mechanisms and concentration dependence of Tm3+ blue upconversion luminescence in codoped NaY(WO4)2 crystals. Journal of Physics D: Applied Physics, 39(10), 2094-2099. doi:10.1088/0022-3727/39/10/019

Scopus Eid


  • 2-s2.0-33646723491

Start Page


  • 2094

End Page


  • 2099

Volume


  • 39

Issue


  • 10

Abstract


  • Optical parameters of NaY(WO4)2 crystals were calculated from absorption spectra with Judd-Ofelt theory. Intensive infrared-to-visible frequency upconversion has been discovered and investigated under a 974 nm CW laser diode excitation at room temperature. The bright blue upconversion fluorescence emission is analysed in detail. The optimal concentration of Tm3+, which is about 1 at% for a Yb3+ concentration of 10 at% for the blue emission in the crystals, is much higher than that in other hosts. The experimental results and theoretical analysis suggest that NaY(WO4)2 with high phonon energy is most probably an even more promising crystal than fluoride. © 2006 IOP Publishing Ltd.

Publication Date


  • 2006

Citation


  • Su, J., Song, F., Tan, H., Han, L., Zhou, F., Tian, J., . . . Chen, H. (2006). Phonon-assisted mechanisms and concentration dependence of Tm3+ blue upconversion luminescence in codoped NaY(WO4)2 crystals. Journal of Physics D: Applied Physics, 39(10), 2094-2099. doi:10.1088/0022-3727/39/10/019

Scopus Eid


  • 2-s2.0-33646723491

Start Page


  • 2094

End Page


  • 2099

Volume


  • 39

Issue


  • 10