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报道了激光二极管端面抽运Tm,Ho:YLF固体激光器的输出特性.室温下,选用不同透过率的输出耦合镜进行了实验研究,确定了最佳输出耦合镜透过率为2%.利用小孔扫描的方法,得到了激光远场的光强分布,证明激光为基横模输出,并且给出了热焦距随抽运功率的变化关系.通过在激光谐振腔内插入两个固体Fabry-Perot标准具的方法,获得了2μm激光的单频输出,阈值功率为250mW,在抽运功率为2·8W时,单频输出功率为118mW.此单频激光器可用作激光振荡器和激光放大器的种子源.
The output characteristics of Tm, Ho: YLF solid-state lasers with end-pumped laser diodes are reported.The output coupling mirrors with different transmittances are selected at room temperature, and the best output coupling mirror transmission is 2% Hole scanning method to get the laser light intensity distribution in the far field to prove that the laser is based on the output of the basic transverse mode and gives the thermal focal length with pumping power variation relationship by inserting two solid Fabry- Perot etalon to obtain a single-frequency output of 2μm laser with a threshold power of 250mW and a single-frequency output power of 118mW at a pumping power of 2.8W This single-frequency laser can be used as a laser oscillator and a laser amplifier The seed source.