We report on the recent progress on continuous-wave (CW) and passviely Q-switched Pr,Mg:SrAl₁₂O₁₉ (SRA) bulk lasers using a 24-W diode laser as pump source. Maximum output power of CW laser at 643 nm reached 1.63 W, which is believed to be the highest power that has ever been achieved in diode-pumped Pr³⁺-doped oxide lasers. After thermal mitigation by a mechanical chopper, a maximum instantaneous output power of 2.32 W can be obtained. For passive Q-switching of Pr,Mg:SRA laser at 724 nm, a Co:ZnSe crystal has been first-time used as saturable absorber, to our knowledge. A maximum average output power of 0.45 W was produced with the shortest pulse width of 180.5 ns at pulse repetition rate of 89.2 kHz, corresponding to pulse energy and peak power of 5 μJ and 28 W. These results indicate that Pr,Mg:SRA is a good oxide candidate for visible laser generation.

我们报告了使用 24-W 二极管激光器作为泵浦源的连续波 (CW) 和被动调 Q Pr,Mg:SrAl ₁₂ O ₁₉ (SRA) 体激光器的最新进展。CW 激光器在 643 nm 处的最大输出功率达到 1.63 W，这被认为是二极管泵浦 Pr ³⁺迄今为止达到的最高功率掺杂氧化物激光器。通过机械斩波器进行热缓解后，可以获得 2.32 W 的最大瞬时输出功率。据我们所知，对于 Pr,Mg:SRA 激光器在 724 nm 的被动调Q，Co:ZnSe 晶体首次被用作可饱和吸收体。在 89.2 kHz 的脉冲重复频率下，最大平均输出功率为 0.45 W，最短脉冲宽度为 180.5 ns，对应的脉冲能量和峰值功率为 5 μJ 和 28 W。这些结果表明 Pr,Mg:SRA 是可见激光生成的良好氧化物候选者。