【摘要】 选择中频电磁感应加热提拉法生长出了透明、基本无散射和气泡、无包裹物的高质量的铥(Tm)取代钇(Y)的原子数分数为2%的Tm∶YLiF4(YLF),并采用X射线衍射(XRD)法对晶体进行了物相分析。测试Tm∶YLF晶体的吸收光谱并计算了Tm离子对不同波长的吸收系数和吸收截面。同时测定其荧光光谱并分析了3H4-3F4和3F4-3H6跃迁产生的发射峰。对Tm∶YLF晶体进行了激光实验,当输入功率为160W时,获得了54.4W的激光输出,斜率效率为35.6%,最大光光转换效率为31.2%。更多还原

【Abstract】 High optical quality 2% number fraction of thulium replacemented yttrium atoms Tm∶YLiF4(YLF) crystal is successfully grown by the Czochralski technique with the medium frequency induction heating furnace.The structure of Tm∶YLF crystal is determined by the precise X ray diffraction(XRD) measurement.And the spectral properties of Tm∶YLF crystal are studied and analyzed by absorption and fluorescence spectra.Absorption coefficient and absorption section of Tm ion at different wavelengths are calculated.At room temperature,Tm∶YLFslabs made by 2% thulium-doped single crystal are end-pumped by a laser diode stack at wavelength of 793 nm.Laser output of 54.4 W continuous wave power at 160 W input power is achieved,corresponding to an optical efficiency of 31.2%.更多还原