Resolution of the relative phase ambiguity in spectral shearing interferometry of ultrashort pulses.
Resolution of the relative phase ambiguity in spectral shearing interferometry of ultrashort pulses.
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DOI：
10.1364/ol.35.001971
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发表时间：
2010-06
期刊：
影响因子：
3.6
通讯作者：
D. Austin;T. Witting;I. Walmsley
中科院分区：
文献类型：
--
作者：
D. Austin;T. Witting;I. Walmsley
我们表明，多剪切光谱剪切干涉术可以克服不相交的光谱分量，是在单剪切方法存在的相对相位模糊。通过上转换未知脉冲与空间啁啾的附属，我们实现了剪切空间映射，可以在成像光谱仪上获得。可以选择该连续范围的剪切的子集，用于使用多剪切算法的鲁棒且准确的相位恢复。
We show that multiple-shear spectral shearing interferometry can overcome the relative phase ambiguity of disjoint spectral components that is present in single-shear approaches. By upconverting the unknown pulse with spatially chirped ancillae, we achieve a shear-to-space mapping that can be acquired on an imaging spectrometer. A subset of this continuous range of shears can be chosen for robust and accurate phase retrieval using a multiple-shear algorithm.