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掺镱氟化钙(Yb3+:CaF2)激光器是最近国际上研究的热点之一,2008年报道的该类激光器,在64 W激光二极管(LD)的抽运下,实现了平均输出功率10.2 W的连续激光输出。利用国产镱钠共掺的氟化钙(Yb,Na:CaF2)激光晶体,采用三镜折叠腔型和激光二极管抽运,获得了该类激光器(Yb,Na:CaF2/Yb:CaF2)的高功率连续输出。实验参数为:输出耦合镜的透过率为4%,激光二极管的最大输出功率为40 W,中心波长为976 nm。当吸收抽运功率18.2 W时,获得了14.5 W的最高功率连续激光输出,相应的斜率效率为80%。结果表明,国产Yb,Na:CaF2晶体具有低激光阈值和高负载能力,是一种优良的高功率激光材料。
Ytterbium-doped calcium fluoride (Yb3 +: CaF2) lasers are one of the hot topics in recent international studies. The lasers reported in 2008 achieved an average output power of 10.2 W at 64 W laser diode (LD) Continuous laser output. The Yb, Na: CaF2 / Yb: CaF2 laser crystals were obtained by using the Ytterbium sodium codoped calcium fluoride (Yb, Na: CaF2) laser crystal with three mirror folding cavity and laser diode pumping Power output continuously. Experimental parameters: the output coupling mirror transmission rate of 4%, the maximum output laser diode power of 40 W, the center wavelength of 976 nm. When absorbing pumping power of 18.2 W, the highest power continuous laser output of 14.5 W was obtained with a corresponding slope efficiency of 80%. The results show that domestic Yb, Na: CaF2 crystals have low laser threshold and high load capacity, which is an excellent high-power laser material.