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arXiv 2402.07006physics.opticsphysics.chem-ph
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对光学散射具有鲁棒性的低频相干拉曼成像

Low frequency coherent Raman imaging robust to optical scattering

David R. Smith, Jesse W. Wilson, Siddarth Shivkumar, Herve Rigneault, Randy A. Bartels

AI总结:

本文提出一种对光学散射具有高鲁棒性的低频干涉式脉冲受激拉曼散射(ISRS)成像方法,解决了散射导致泵浦脉冲污染并阻碍光谱提取的问题,在复杂散射样品中仍能获得高信噪比的拉曼光谱。

摘要:

我们展示了低频干涉式脉冲受激拉曼散射(ISRS)成像,其对光学散射引起的畸变具有高鲁棒性。ISRS是一种能够捕获拉曼振动光谱的泵浦-探测相干拉曼光谱技术。记录ISRS光谱需要将探测脉冲与泵浦脉冲隔离。虽然这种分离在液体等非散射样品中很简单,但散射会导致显著的泵浦脉冲污染,并阻碍拉曼光谱的提取。我们引入了一种适用于复杂散射样品的ISRS显微鲁棒方法。即使泵浦和探测脉冲穿过许多散射层,也能获得高信噪比的ISRS光谱。

英文摘要:

We demonstrate low-frequency interferometric impulsive stimulated Raman scattering (ISRS) imaging with high robustness to distortions by optical scattering. ISRS is a pump-probe coherent Raman spectroscopy that can capture Raman vibrational spectra. Recording of ISRS spectra requires isolation of a probe pulse from the pump pulse. While this separation is simple in non-scattering specimens, such as liquids, scattering leads to significant pump pulse contamination and prevent the extraction of a Raman spectrum. We introduce a robust method for ISRS microscopy that works in complex scattering samples. High signal-to-noise ISRS spectra are obtained even when the pump and probe pulses pass through many scattering layers.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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