T.J. Watson Laboratory of Applied Physics, California Institute of Technology, Pasadena, California 91125, USA.
Department of Microelectronics and Nanoelectronics, Tsinghua University, Beijing 100084, China.
Nat Commun. 2017 Mar 23;8:14869. doi: 10.1038/ncomms14869.
Dissipative Kerr solitons are self-sustaining optical wavepackets in resonators. They use the Kerr nonlinearity to both compensate dispersion and offset optical loss. Besides providing insights into nonlinear resonator physics, they can be applied in frequency metrology, precision clocks, and spectroscopy. Like other optical solitons, the dissipative Kerr soliton can radiate power as a dispersive wave through a process that is the optical analogue of Cherenkov radiation. Dispersive waves typically consist of an ensemble of optical modes. Here, a limiting case is studied in which the dispersive wave is concentrated into a single cavity mode. In this limit, its interaction with the soliton induces hysteresis behaviour in the soliton's spectral and temporal properties. Also, an operating point of enhanced repetition-rate stability occurs through balance of dispersive-wave recoil and Raman-induced soliton-self-frequency shift. The single-mode dispersive wave can therefore provide quiet states of soliton comb operation useful in many applications.
耗散克尔孤子是谐振器中自维持的光学波包。它们利用克尔非线性来补偿色散并抵消光损耗。除了为非线性谐振器物理提供深入了解外，它们还可以应用于频率计量、精密时钟和光谱学。与其他光孤子一样，耗散克尔孤子可以通过类似于切伦科夫辐射的光学过程将功率辐射为色散波。色散波通常由一组光学模式组成。在这里，研究了一个限制情况，其中色散波集中在单个腔模式中。在这个极限下，它与孤子的相互作用导致孤子的光谱和时间特性的滞后行为。此外，通过色散波反冲和拉曼诱导孤子自频移的平衡，出现了重复率稳定性增强的工作点。因此，单模色散波可以为孤子梳状操作提供有用的安静状态，在许多应用中都很有用。
