论文部分内容阅读
In this paper, the measured results of spectroscopic properties for Tm, Ho co doped YVO 4 crystals are reported. The absorption spectra, fluorescence spectra and calculated spectroscopic parameters are given. The processes of sensitized luminescence of Ho 3+ by Tm 3+ with 805 nm LD pumping were investigated. It was found that Tm 3+ ion in YVO 4 has a larger uniform absorption width (～26 nm) and a larger peak and integreted cross section of absorption at 800nm (～1.4×10 -20 cm 2 and 246×10 -20 cm) than that in YAG and YLF. The high energy transfer efficiency from Tm 3+ to Ho 3+ (up to 87%) and low pumping threshold (15 mW) show that Tm 3+ can efficiently sensitize Ho 3+ in YVO 4 crystal. The dependence of ～2 μm emission for Ho 3+ on the Tm, Ho doping concentrations was preliminarily analyzed and discussed.
The absorption spectra, fluorescence spectra and calculated spectroscopic parameters are given. The processes of sensitized luminescence of Ho 3+ by Tm 3+ with 805 It was found that Tm 3+ ion in YVO 4 has a larger uniform absorption width (~ 26 nm) and a larger peak and integreted cross section of absorption at 800 nm (~ 1.4 × 10 -20 cm 2 and 246 × 10 -20 cm) than that in YAG and YLF. The high energy transfer efficiency from Tm 3+ to Ho 3+ (up to 87%) and low pumping threshold (15 mW) show that Tm 3+ can effectively sensitize Ho 3+ in YVO 4 crystal. The dependence of ~ 2 μm emission for Ho 3+ on the Tm, Ho doping concentrations was preliminarily analyzed and discussed.