120-fs single-pulse generation from stretched-pulse fiber Kerr resonators.
120-fs single-pulse generation from stretched-pulse fiber Kerr resonators.
复制标题
DOI：
10.1364/ol.454498
复制
发表时间：
2022-09-01
期刊：
影响因子：
3.6
通讯作者：
中科院分区：
文献类型：
--
作者：
光纤克尔谐振器是简单的驱动谐振器，具有期望的波长和重复率灵活性，用于产生超短脉冲，用于包括电信、生物医学和材料处理的应用。然而，迄今为止，光纤克尔谐振器通常产生更长的脉冲，并且需要比应用所期望的更复杂的技术来产生单脉冲。在这里，我们解决这些限制，通过展示强大的单脉冲性能支持120 fs的脉冲宽度在光纤克尔谐振器的基础上拉伸脉冲孤子。通过匹配的数值和实验研究，发现展宽脉冲孤子的性能强烈地依赖于总腔长，并发现最佳长度依赖于驱动，拉曼散射，和总的脉冲拉伸。带宽随着净色散的减小而增加，这是由更短的总腔长实现的。在一个优化的腔长和所描述的设置，稳定的拉伸脉冲孤子对应于120 fs的持续时间进行了实验观察。此外，孤子捕获证明了与脉冲驱动源，尽管大腔内呼吸和单脉冲性能观察。稳定的高性能单脉冲产生是实现实用飞秒脉冲产生的关键一步。
Fiber Kerr resonators are simple driven resonators with desirable wavelength and repetition rate flexibility for generating ultrashort pulses for applications including telecommunications, biomedicine, and materials processing. However, fiber Kerr resonators to date often generate longer pulses and require more complicated techniques for generating single pulses than would be desirable for applications. Here we address these limits by demonstrating robust single-pulse performance supporting 120-fs pulse durations in fiber Kerr resonators based on stretched-pulse solitons. Through matching numerical and experimental studies, stretched-pulse soliton performance is found to strongly depend on the total cavity length, and the optimum length is found to depend on the drive, Raman scattering, and the total pulse stretching. The bandwidth increases with decreasing net dispersion, enabled by shorter total cavity lengths. In a cavity with an optimized length and the described setup, stable stretched-pulse solitons corresponding to 120-fs duration are experimentally observed. In addition, soliton trapping is demonstrated with a pulsed drive source despite large intracavity breathing and single-pulse performance is observed. Robust with high performance single-pulse generation is a critical step toward useful femtosecond pulse generation.