中文摘要：

利用全固态Nd：YVO4激光器的914 nm输出作为抽运源，对Nd：YVO4晶体进行基态高斯塔克能级共振抽运，获得了高效率的1064 nm激光输出。为解决基态高斯塔克能级共振抽运吸收差、光-光转换效率低的问题，详细分析了掺杂浓度、温度以及长度等晶体参数对抽运光吸收和激光转换效率的影响。在此基础上，使用长度为20 mm的Nd：YVO4晶体获得了相对入射抽运光56.9%的高光-光转换效率。914 nm基态高斯塔克能级共振抽运Nd：YVO4激光器的光-光转换效率达到了可与传统抽运相比拟的实用化水平。

英文摘要：

A high efficiency 1064 nm Nd：YVO4 laser which is in-band pumped from high Stark level of ground state to upper laser level by another Nd：YVO4 laser operating at 914 nm is demonstrated. To overcome the drawback of low optical-optical conversion efficiency induced by poor pump absorption, the influences of doping concentration, temperature and length of laser gain medium on pump absorption and laser conversion efficiency are investigated in detail. On this basis, a high optical-optical efficiency of 56.9% is achieved by using Nd：YVO4 crystal with length of 20 mm as gain medium. The optical-optical conversion efficiency of the Nd：YVO4 laser in-band pumped from high Stark level of ground state at 914 nm reaches a practical level comparable to that of traditional pumping.