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用提拉法生长了新型激光晶体5at%Yb3+:YNbO4,测量了它的吸收和光致发光光谱,计算了它的吸收和发射截面,并对其激光性能进行了评估.Yb3+:YNbO4的吸收半峰全宽为17nm,吸收峰位于933,955,974和1003nm,相应的吸收截面分别为0.73×1020,1.85×1020,0.86×1020和0.44×1020cm2;最大吸收截面值为Yb3+:YAG的两倍.光致发光谱的发射带的中心位置处于1020nm附近,相应的半高宽为41nm,是Yb3+:YAG的3倍;Yb3+:YNbO4在955,974,1005,1021和1030nm处都有着较大的发射截面,截面值分别为0.69×1020,0.86×1020,1.81×1020,1.11×1020和0.57×1020cm2,最大发射截面值与Yb3+:YAG相当.Yb3+:YNbO4晶体的宽发射带有利于实现相应波长的超短脉冲和可调谐激光输出,表明它是在这些领域非常有希望的全固态工作物质.
The new laser crystal 5at% Yb3 +: YNbO4 was grown by Czochralski method, its absorption and photoluminescence spectra were measured, and its absorption and emission cross sections were calculated and its laser performance was evaluated. The absorption peak of Yb3 +: YNbO4 The full width at 17nm, the absorption peak at 933, 955, 974 and 1003nm, the corresponding absorption cross sections were 0.73 × 1020, 1.85 × 1020, 0.86 × 1020 and 0.44 × 1020cm2, respectively. The maximum absorption cross section was twice that of Yb3 +: YAG. Yb3 +: YNbO4 has larger emission cross sections at 955, 974, 1005, 1021 and 1030 nm, the cross-sectional values are respectively 0.69 × 1020,0.86 × 1020,1.81 × 1020,1.11 × 1020 and 0.57 × 1020cm2, the maximum emission cross-section value is equivalent to that of Yb3 +: YAG.The wide emission band of Yb3 +: YNbO4 crystal is conducive to realize the ultrashort pulse and tunable The laser output shows that it is a very promising all-solid working substance in these fields.