The spectroscopic and laser properties of mixed fluoride Tm:CaF 2 –SrF 2 crystals were investigated. The 1.9 ##IMG## [http://ej.iop.org/images/1612-202X/17/2/025802/lplab5f58ieqn001.gif] m radiation was obtained in two samples with Tm 3+ ion doping concentrations of 1.0 mol% and 2.0 mol% under laser diode pumping at 763 nm. The highest slope efficiency of 32.5% and the widest laser tuning range of 232 nm (1761–1993 nm) were demonstrated with the 1%-doped sample. The maximal output power amplitude of 3.4 W at 1902 nm for an absorbed pump power amplitude of 13.8 W was demonstrated with the 2%-doped sample.

中文翻译：

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广泛可调的二极管泵浦Tm 3+：CaF 2 –SrF 2激光器的光谱和激光特性

研究了混合氟化物Tm：CaF 2 -SrF 2晶体的光谱和激光性质。在两个样品中获得了1.9 ## IMG ## [http://ej.iop.org/images/1612-202X/17/2/025802/lplab5f58ieqn001.gif] m辐射，Tm 3+离子掺杂浓度为1.0激光二极管泵浦在763 nm时的mol％和2.0 mol％。掺杂1％的样品证明了最高的斜率效率32.5％和最大的激光调谐范围232 nm（1761-1993 nm）。对于掺杂2％的样品，对于13.8 W的吸收泵浦功率幅度，在1902 nm处的最大输出功率幅度为3.4W。