We investigated the performance of diode pumped mode-locked Yb:CGA laser operating in the net normal or net anomalous dispersion region. With 26 W pump power, stable femtosecond laser pulses with average power of 4.5 W are obtained, yielding a pump power slope efficiency of 17%. Operating at 80.5 MHz repetition rate, the laser delivers as short as 93 fs pulse duration with average output power of 4.5 W, corresponding to a pulse energy of 56 nJ and a peak power of 0.59 MW. The oscillator exhibits a passive rms power stability of ~0.38% rms over 5 h in high beam quality.

中文翻译：

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二极管泵浦的Yb：CaGdAlO ₄激光器发出的93 fs瓦特功率的脉冲

我们研究了在净正常或净反常色散区域中工作的二极管泵浦锁模Yb：CGA激光器的性能。泵浦功率为26 W时，可获得平均功率为4.5 W的稳定飞秒激光脉冲，泵浦功率斜率效率为17％。该激光器以80.5 MHz的重复频率运行，可提供短至93 fs的脉冲持续时间，平均输出功率为4.5 W，对应于56 nJ的脉冲能量和0.59 MW的峰值功率。在高光束质量的情况下，该振荡器在5 h内具有约0.38％rms的无源rms功率稳定性。