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报道了一种光纤耦合激光二极管阵列(LDA)抽运Nd∶YAG晶体、腔内Ⅰ类临界相位匹配LBO和频、连续波输出的全固态589 nm激光器的设计和实验结果。黄激光是由Nd∶YAG晶体的1064 nm和1319 nm谱线腔内和频产生的,其对应能级跃迁分别为4F3/2→4I11/2和4F3/2→4I13/2。实验采用三镜折叠腔结构,在808 nm的15 W抽运功率下,获得了最高功率为860 mW连续波TEM00的589 nm黄激光输出,光-光转换效率为5.7%,激光输出功率噪声低,光束质量因子M2<1.2,4 h功率稳定度优于±3.4%。实验结果表明采用三镜折叠腔进行腔内和频是获得589 nm黄激光的有效方法,并可以应用到Nd∶YAG晶体的其他谱线或具有多条谱线的其他激光增益介质,获得更多不同波长激光输出。
The design and experimental results of an all-solid-state 589 nm laser with fiber-coupled laser diode array (LDA) pumping Nd:YAG crystal, intracavity I-phase matching LBO and frequency and CW output are reported. The yellow laser is generated by the intracavity sum of the 1064 nm and 1319 nm spectral lines of Nd: YAG crystal, and the corresponding level transitions are 4F3 / 2 → 4I11 / 2 and 4F3 / 2 → 4I13 / 2, respectively. The experimental results show that the maximum power of 589 nm yellow laser output of 860 mW continuous wave TEM00 at 158 pumped at 808 nm is achieved. The light-to-light conversion efficiency is 5.7%, and the laser output power is low , Beam quality factor M2 <1.2,4 h Power stability better than ± 3.4%. The experimental results show that the intracavity and frequency of the three-mirror folding cavity is an effective method to obtain 589 nm yellow laser and can be applied to other lines of Nd:YAG crystal or other laser gain medium with multiple lines to obtain more Different wavelength laser output.