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LiLuF4 single crystals co-doped with thulium (5%) and holmium (0.5%), having large size, intact shape, and high optical quality, are successfully grown by the Czochralski technique. Absorption and fluorescence spectra of the crystal are measured. The absorption spectrum shows that the main absorption band locates at near 686 and 792 nm and the fluorescence spectrum peaks at 2.05 um. At room temperature, the as-grown Tin, Ho: LiLuF4 single crystals are end-pumped by a fiber-coupled laser diode system with pumping wavelength of 795 nm under CW operations. A power of 50 mw contin- uous laser outout at 2.05-um wavelength is achieved. Meanwhile an obvious green light is detected. 相似文献
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新型光折变晶体Mn:YAlO3的生长与光谱性质研究 总被引:1,自引:0,他引:1
采用提拉法成功生长了无散射掺杂0.5;原子分数的Mn:YAlO3(Mn:YAP)光折变单晶体,晶体尺寸约为25mm×47mm,原生态晶体呈桔黄色.XRD测试结果表明,Mn:YAP晶体具有与纯YAP相同的结构(Pnma),但Mn离子掺杂后相应的晶胞参数略有减小.采用ICP方法测试计算得Mn离子在YAlO3晶体中的分凝系数约为0.11.在室温下测试了Mn:YAP晶体的吸收和荧光光谱,并初步分析了Mn:YAP晶体的光谱特征.研究表明Mn:YAP晶体中,Mn4+离子充当光折变中心,其吸收和发射峰分别对应于480nm和720nm. 相似文献