摘要
Nd:LuVO4晶体因具有相比于Nd:YVO4和Nd:GdVO4晶体更大的吸收和发射截面而受到广泛关注。一种高效的泵浦方式因此而产生:将Nd3+离子直接泵浦到4F3/2激光上能级来改善激光器参数,不仅可以减小激光器的阈值,提高激光器的斜效率,并且可以降低非辐射跃迁过程中所产生的热量。利用888 nm激光二极管直接泵浦Nd:LuVO4晶体,实现了准三能级Nd:LuVO4激光器。当入射泵浦功率为18.6 W时,916 nm的输出功率为2.5 W,激光器的阈值功率为4.7 W,相应的斜效率为17.8%。入射泵浦功率不变的情况下,获得的最大蓝光输出功率为743 m W。蓝光输出功率的稳定性高于3%。光束质量M2的值为1.12。
Nd：LuVO4, has attracted much attention because its larger absorption and emission cross sections than Nd：YVO4and Nd：Gd VO4. A more efficient pumping method was presented and researched,which was to pump the Nd3＋ions directly into the4F3/2upper lasing level to improve the laser parameters such as decreasing the threshold and increasing the slope efficiency and reduce the amount of heat generated by the nonradiative processes. In this paper, the report a quasi-three-level Nd：LuVO4 laser which is directly pumped by a laser diode at 888 nm. Achieved an output power of 2.5 W at 916 nm for an incident pump power of 18.6 W. The incident pump power at threshold of laser oscillation was 4.7 W,corresponding to the slope efficiency with respect to the incident pump power was 17.8%. For the same incident pump power, a maximum blue output power was 743 m W. The stability of the blue output power was better than 3%. The beam quality M2 value is 1.12.
出处
《红外与激光工程》
EI
CSCD
北大核心
2015年第3期884-887,共4页
Infrared and Laser Engineering
