Liang Wei, Savchenkov Anatoliy A, Ilchenko Vladimir S, Eliyahu Danny, Seidel David, Matsko Andrey B, Maleki Lute
Opt Lett. 2014 May 15;39(10):2920-3. doi: 10.1364/OL.39.002920.
We demonstrate experimentally, and describe theoretically, generation of a wide, fundamentally phase-locked Kerr frequency comb in a nonlinear resonator with a normal group velocity dispersion (GVD). A magnesium fluoride whispering-gallery mode resonator characterized with 10 GHz free spectral range and pumped either at 780 or 795 nm is used in the experiment. The envelope of the observed frequency comb differs significantly from the Kerr frequency comb spectra reported previously. We show via numerical simulation that, while the frequency comb does not correspond to generation of short optical pulses, the relative phase of the generated harmonics are fixed.
我们通过实验演示并从理论上描述了在具有正常群速度色散（GVD）的非线性谐振器中产生宽的、基本锁相的克尔频率梳。实验中使用了一个具有10GHz自由谱范围、泵浦波长为780或795nm的氟化镁回音壁模式谐振器。观察到的频率梳的包络与先前报道的克尔频率梳光谱有显著不同。我们通过数值模拟表明，虽然频率梳并不对应于短光脉冲的产生，但所产生谐波的相对相位是固定的。
