Abstract We experimentally demonstrate compressed time-domain coherent Raman spectroscopy with real-time random sampling. Specifically, we employ Fourier-transform coherent anti-Stokes Raman scattering as a platform for the spectroscopy and demonstrate reconstruction of Raman spectra from sparsely sampled time-domain interferograms using the iterative shrinkage-thresholding algorithm. We show that Raman spectra reconstructed at compression ratios down to 0.3 retain the quality of a fully sampled Raman spectrum. We also verify this performance with multiple molecules to demonstrate its versatility. Advantages of our method include data volume reduction, signal acquisition time reduction, and alleviated requirements for measurement instruments. © 2019 Optical Society of America.

中文翻译：

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具有实时随机采样的压缩时域相干拉曼光谱

摘要 我们通过实验证明了实时随机采样的压缩时域相干拉曼光谱。具体来说，我们采用傅里叶变换相干反斯托克斯拉曼散射作为光谱平台，并演示了使用迭代收缩阈值算法从稀疏采样的时域干涉图重建拉曼光谱。我们表明，以低至 0.3 的压缩比重建的拉曼光谱保留了完全采样的拉曼光谱的质量。我们还用多个分子验证了这种性能，以证明其多功能性。我们方法的优点包括数据量减少、信号采集时间减少以及对测量仪器的要求降低。© 2019 美国光学学会。