| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 1494891 | Optical Materials | 2013 | 6 Pages |
•Polarized spectral properties of Ho3+/Tm3+:β′-Gd2(MoO4)3 crystal were studied.•Broad absorption band of the crystal around 795 nm is suitable for LD pumping.•Peak emission cross section around 2.0 μm is comparable to that of Ho3+:YAG.•Coupling decay behavior of Tm3+ and Ho3+ embodies energy transfer between them.•Ho3+ laser around 2.0 μm with a tunable range of about 130 nm can be expected.
Ho3+/Tm3+ co-doped β′-Gd2(MoO4)3 single crystal was investigated as gain medium for Ho3+ laser around 2.0 μm. Polarized absorption and fluorescence spectra of the crystal were measured. Polarized spectral parameters of Ho3+ ions in the crystal were calculated and the gain curves around 2.0 μm were estimated. The fluorescence decay curves for Tm3+ and Ho3+ ions related to the 2.0 μm laser were measured and analyzed. The distinct coupled decay behavior for the Ho3+/Tm3+ co-doped system embodies the existence of energy transfer between Tm3+ and Ho3+ ions.
