摘要
本文报道了一种全固态腔内和频608.1 nm激光器。在激光谐振腔两个分臂中,两支激光二极管分别泵浦Nd∶YVO4和Nd∶YAG晶体,分别选择1 342 nm波长(Nd∶YVO4晶体的4F3/2-4I13/2谱线)与1 112 nm波长(Nd∶YAG晶体的4F3/2-4I11/2谱线)振荡并进行腔内和频。通过优化谐振腔设计,腔内两个波长获得了较好的模式匹配。在两个分臂的交叠部分,利用LBO I类相位匹配进行和频,获得和频608.1 nm激光输出。实验表明,当Nd∶YVO4与Nd∶YAG晶体泵浦功率分别为600和740 m W时,获得了功率为23.8 m W、波长为608.1 nm激光输出,激光输出稳定、噪声低。利用本文提出的和频结构是获得608.1 nm激光输出较为有效的方法。
A compact all-solid-state intracavity sum-frequency mixing laser at 608. 1 nm is reported. A Nd∶YAG crystal and a Nd∶ YVO4 crystal are pumped by two laser diodes respectively in two sub-arms of the laser cavity. In the two arms,laser wavelengths of 1 342 nm from Nd∶ YVO4crystal（ corresponding to the4F3 /2-4I13 /2transition） and 1 112 nm from Nd∶ YAG crystal（ corresponding to the4F3 /2-4I11 /2transition） are selected to be mixed into 608. 1 nm laser. Through optimization of the cavity design,better matching of the modes for the two wavelengths is obtained. In the overlapping of the two arms,sum-frequency mixing is generated with a type I phase-matching LBO crystal. The experiment result shows that a stable and low noisy output of 23. 8 m W at608. 1 nm is obtained at the incident pump power of 740 m W for the Nd∶ YAG crystal and 600 m W for the Nd∶ YVO4 crystal. It is an efficient way to obtain 608. 1 nm laser with the sum-frequency mixing structure proposed in this article.
出处
《中国光学》
EI
CAS
CSCD
2015年第5期794-799,共6页
Chinese Optics
基金
国家自然科学基金资助项目(No.61405190)
