Zeng Huang-Jun, Lin Zhang-Lang, Zhang Ge, Pan Zhongben, Loiko Pavel, Mateos Xavier, Petrov Valentin, Lin Haifeng, Chen Weidong
Opt Express. 2025 Jun 2;33(11):22988-22996. doi: 10.1364/OE.563483.
We present a comprehensive study of both continuous-wave and first mode-locked operation of a diode-pumped Yb:CaLa(BO) laser in the soliton regime. Using a 976-nm single-spatial-mode, fiber-coupled InGaAs diode laser as pump source, the Yb:CaLa(BO) laser delivers a maximum continuous-wave output power of 491 mW at 1050.6 nm, with a slope efficiency of 63%. Passive mode-locking is realized using a commercial semiconductor saturable absorber mirror, generating soliton pulses as short as 35 fs at 1055.9 nm, with an average output power of 96 mW at a pulse repetition rate of ∼66.5 MHz. By optimizing the output coupling, the average output is scaled to 239 mW for slightly longer 48-fs pulses at 1051.9 nm, corresponding to a peak power of 65.9 kW and a laser efficiency of 29%. These results highlight the potential of Yb:CaLa(BO) as a gain medium for sub-50-fs ultrafast laser applications.
我们对二极管泵浦Yb:CaLa(BO)激光在孤子 regime下的连续波和首次锁模操作进行了全面研究。使用976nm单空间模式、光纤耦合的InGaAs二极管激光器作为泵浦源，Yb:CaLa(BO)激光器在1050.6nm处提供了491mW的最大连续波输出功率，斜率效率为63%。使用商用半导体可饱和吸收镜实现了被动锁模，在1055.9nm处产生了短至35fs的孤子脉冲，在脉冲重复频率约为66.5MHz时平均输出功率为96mW。通过优化输出耦合，对于1051.9nm处稍长的48fs脉冲，平均输出功率扩大到239mW，对应峰值功率为65.9kW，激光效率为29%。这些结果突出了Yb:CaLa(BO)作为低于50fs超快激光应用增益介质的潜力。 （注：“soliton regime”这里可能有特定专业术语未准确翻译，可根据具体领域调整，整体先按此翻译）
