We formulate theoretically and demonstrate experimentally an all-optical method for reconstruction of the amplitude, phase, and coherence of frequency combs from a single-shot measurement of the spectral intensity. Our approach exploits synthetic frequency lattices with pump-induced spectral short- and long-range couplings between different signal components across a broad bandwidth of hundreds of GHz in a single nonlinear fiber. When combined with ultra-fast signal conversion techniques, this approach has the potential to provide real-time measurement of pulse-to-pulse variations in the spectral phase and coherence properties of exotic light sources.

中文翻译：

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用于频率梳单次重构的合成光子晶格

我们从理论上进行公式化，并通过实验证明了一种通过单次测量光谱强度来重构频率梳的幅度，相位和相干性的全光学方法。我们的方法利用合成频率晶格，在单个非线性光纤中跨数百GHz的宽带宽内的不同信号分量之间通过泵浦引起的频谱短程和长程耦合。当与超快速信号转换技术结合使用时，这种方法具有提供实时测量异相光源光谱相位和相干特性中脉冲间变化的潜力。