Communication: two-dimensional gas-phase coherent anti-Stokes Raman spectroscopy (2D-CARS): simultaneous planar imaging and multiplex spectroscopy in a single laser shot.
Communication: two-dimensional gas-phase coherent anti-Stokes Raman spectroscopy (2D-CARS): simultaneous planar imaging and multiplex spectroscopy in a single laser shot.
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DOI：
10.1063/1.4810876
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发表时间：
2013-06
期刊：
影响因子：
--
通讯作者：
A. Bohlin;C. Kliewer
中科院分区：
文献类型：
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作者：
A. Bohlin;C. Kliewer
相干反斯托克斯拉曼光谱（汽车）自30多年前发展以来，已被广泛用作化学传感、分子动力学测量和振转光谱的有力工具，在燃烧诊断、细胞生物学、等离子体物理和爆炸物的远距离检测等不同的研究领域中找到用途。在单次激光照射内获得多个空间维度的分辨汽车光谱的能力一直是动力学过程研究的长期目标，但由于相位匹配和检测考虑，已经证明是难以捉摸的。在这里，通过结合新的相位匹配和检测方案与高效率的飞秒激发的拉曼相干，我们介绍了一种技术的单次拍摄的二维（2D）空间测量的气相汽车光谱。我们展示了一个光谱仪，使二维平面成像和光谱同时，并提出了在氮气和空气中的15,000个空间相关的旋转汽车光谱的瞬时测量超过40毫米（2）的二维字段。
Coherent anti-Stokes Raman spectroscopy (CARS) has been widely used as a powerful tool for chemical sensing, molecular dynamics measurements, and rovibrational spectroscopy since its development over 30 years ago, finding use in fields of study as diverse as combustion diagnostics, cell biology, plasma physics, and the standoff detection of explosives. The capability for acquiring resolved CARS spectra in multiple spatial dimensions within a single laser shot has been a long-standing goal for the study of dynamical processes, but has proven elusive because of both phase-matching and detection considerations. Here, by combining new phase matching and detection schemes with the high efficiency of femtosecond excitation of Raman coherences, we introduce a technique for single-shot two-dimensional (2D) spatial measurements of gas phase CARS spectra. We demonstrate a spectrometer enabling both 2D plane imaging and spectroscopy simultaneously, and present the instantaneous measurement of 15,000 spatially correlated rotational CARS spectra in N2 and air over a 2D field of 40 mm(2).