Dong Xue, Yang Qian, Spiess Christopher, Bucklew Victor G, Renninger William H
Institute of optics, University of Rochester, Rochester, New York 14627, USA.
Phys Rev Lett. 2020 Jul 17;125(3):033902. doi: 10.1103/PhysRevLett.125.033902.
Kerr resonators support novel nonlinear wave phenomena including technologically important optical solitons. Fiber Kerr resonator solitons enable wavelength and repetition-rate versatile femtosecond-pulse and frequency-comb generation. However, key performance parameters, such as pulse duration, lag behind those from traditional mode-locked laser-based sources. Here we present new pulse generation in dispersion-managed Kerr resonators based on stretched-pulse solitons, which support the shortest pulses to date from a fiber Kerr resonator. In contrast to established Kerr resonator solitons, stretched-pulse solitons feature Gaussian temporal profiles that stretch and compress each round trip. Experimental results are in excellent agreement with numerical simulations. The dependence on dispersion and drive power are detailed theoretically and experimentally and design guidelines are presented for optimizing performance. Kerr resonator stretched-pulse solitons represent a new stable nonlinear waveform and a promising technique for femtosecond pulse generation.
克尔谐振器支持包括技术上重要的光学孤子在内的新型非线性波现象。光纤克尔谐振器孤子能够实现波长和重复率灵活的飞秒脉冲和频率梳产生。然而，诸如脉冲持续时间等关键性能参数落后于传统锁模激光源的参数。在此，我们展示了基于拉伸脉冲孤子的色散管理克尔谐振器中的新型脉冲产生，其支持光纤克尔谐振器迄今为止产生的最短脉冲。与已有的克尔谐振器孤子不同，拉伸脉冲孤子具有高斯时间轮廓，在每个往返过程中会拉伸和压缩。实验结果与数值模拟结果非常吻合。从理论和实验上详细研究了对色散和驱动功率的依赖性，并给出了优化性能的设计准则。克尔谐振器拉伸脉冲孤子代表了一种新的稳定非线性波形以及一种有前景的飞秒脉冲产生技术。
