中国光学2016，Vol.9Issue(2)：241-248,8.DOI:10.3788/CO.20160902.0241
太阳光泵浦固体激光阈值的理论分析
Theoretical analysis on threshold of solar pumped solid state lasers
摘要
Abstract
In order to select suitable solar pumped laser materials,a theoretical model is established based on the four-level rate equation,taking the solar spectrum into account.By this model,the pump intensity thresh-olds of Nd3+∶YAG,Nd3+∶glass,Nd∶Cr∶GSGG (Nd3+∶Cr3+∶Gd3Sc2Ga3O12),Cr3+∶BeAl2O4 and Cr3+∶Nd3+∶YAG for the different pump schemes are analyzed.The results show that the pump intensity threshold of Nd3+∶YAG is 448 sun constant when it is side pumped by a single beam and is 224 sun constant when it is side pumped inside a ellipsoidal cavity,respectively,indicating that Nd3+∶YAG is suitable for solar pumped laser material.Due to the special structure of the ellipsoidal cavity,the pump intensity threshold is relatively low when it is side pumped inside a ellipsoidal cavity.The relationship between the pump intensity threshold and the diameter of the material is also analyzed.The model could be applied to select suitable materials which are easier to achieve laser output from the existing laser materials.关键词
固体激光器/太阳光泵浦/速率方程/理论分析/泵浦阈值光强Key words
solid state lasers/solar pumped/rate equation/theoretical analysis/pump intensity threshold分类
信息技术与安全科学引用本文复制引用
张军斌,黄志云..太阳光泵浦固体激光阈值的理论分析[J].中国光学,2016,9(2):241-248,8.基金项目
国家自然科学基金资助项目（No．61008062）Supported by National Natural Science Foundation of China （）
