论文标题
双分散指数双弯曲模式锁定激光器
Dual-dispersion-regime dual-comb mode-locked laser
论文作者
论文摘要
我们报告了第一个固态双弯曲模式锁定激光器，同时在不同的分散状态下运行。由于固有的两极分化，在双重fringfringent yb：ca $ _3 $ _3 $ nbga $ _3 $ _3 $ si $ _2 $ _2 $ _2 $ _ {14} $（yb：cngs）增益中等，Laser em em ex cavity的重复率交叉极化的脉冲火车带有重复的速率偏移。我们通过将净腔组延迟分散剂设置为在所使用的增益培养基的发射带上交叉零，从而在持续时间内获得具有20倍差异的双脉冲产生。虽然孤子样脉冲的持续时间为异常分散剂的持续时间为117 fs，但频谱位于正常色散区域的第二激光输出却以2360 fs的脉冲持续时间强烈搅动。
We report on the first solid-state dual-comb mode-locked laser simultaneously operating in different dispersion regimes. Due to the intrinsic polarization-multiplexing in a birefringent Yb:Ca$_3$NbGa$_3$Si$_2$O$_{14}$ (Yb:CNGS) gain medium, the laser emits two cross-polarized pulse trains with a repetition rate offset of ~4.8 kHz from a single cavity. We obtain dual pulse generation with 20-fold difference in the duration, by setting the net cavity group delay dispersion to cross zero across the emission band of the employed gain medium. While the duration of the soliton-like pulses experiencing anomalous dispersion amounts to 117 fs, the second laser output that is spectrally located in the normal dispersion region, is strongly chirped with a pulse duration of 2360 fs.
