Wang Yiran, Su Xiancui, Xie Yiyan, Gao Feilong, Kumar Santosh, Wang Qinglin, Liu Cailong, Zhang Bingyuan, Zhang Baitao, He Jingliang
Opt Lett. 2021 Apr 15;46(8):1892-1895. doi: 10.1364/OL.421999.
Pulses as short as 17.8 fs with a spectral bandwidth of 145 nm and central wavelength of 1118 nm have been generated from a Kerr-lens mode-locked Yb:CALGO oscillator. The oscillator operating at an average power of 26 mW and a repetition rate of 95.9 MHz is pumped by a cost-effective single-mode fiber coupled laser diode emitting 800 mW at 976 nm. The dispersion is compensated using a prism pair combined with broadband chirp mirrors. To the best of our knowledge, the pulse durations corresponding to approximately 4.8 optical cycle pulses are the shortest achieved durations through a Yb-doped bulk oscillator.
通过克尔透镜锁模Yb:CALGO振荡器产生了脉宽短至17.8飞秒、光谱带宽为145纳米、中心波长为1118纳米的脉冲。该振荡器以26毫瓦的平均功率和95.9兆赫兹的重复频率运行，由一个在976纳米处发射800毫瓦的高性价比单模光纤耦合激光二极管泵浦。使用棱镜对与宽带啁啾镜相结合来补偿色散。据我们所知，对应于约4.8个光学周期脉冲的脉冲持续时间是通过掺镱体振荡器实现的最短持续时间。
