Edelmann Marvin, Hua Yi, Pergament Mikhail, Kärtner Franz X
Opt Lett. 2024 Mar 1;49(5):1237-1240. doi: 10.1364/OL.515953.
We demonstrate the strong performance enhancement of an all-polarization-maintaining mode-locked fiber oscillator using a linear self-stabilized fiber interferometer via the suppression of the cross-phase modulation (XPM). Numerical simulations reveal that XPM significantly affects the saturable absorber dynamics resulting in strong distortions of the mode-locked steady-states and output pulse quality. For experimental verification, we construct an oscillator with XPM suppression, employing an intra-cavity YVO crystal to obtain a differential walk-off effect and compare its characteristics with a reference oscillator in a standard configuration. It is shown, that the XPM suppression not only lowers the mode-locking threshold by more than 45% but further results in improved pulse quality at the output ports and reduced nonlinear loss in the artificial saturable absorber.
我们展示了一种全保偏锁模光纤振荡器通过抑制交叉相位调制（XPM），利用线性自稳定光纤干涉仪实现了显著的性能提升。数值模拟表明，XPM会显著影响饱和吸收体的动力学，导致锁模稳态和输出脉冲质量出现严重畸变。为进行实验验证，我们构建了一个具有XPM抑制功能的振荡器，采用腔内YVO晶体以获得差分走离效应，并将其特性与标准配置的参考振荡器进行比较。结果表明，XPM抑制不仅使锁模阈值降低了超过45%，还进一步改善了输出端口的脉冲质量，并降低了人工饱和吸收体中的非线性损耗。
