显微镜术中相干反斯托克斯拉曼散射信号的干涉切换
Interferometric switching of coherent anti-Stokes Raman scattering signals in microscopy.
作者信息
Nikolaenko Alexei, Krishnamachari Vishnu Vardhan, Potma Eric Olaf
机构信息
Department of Chemistry, Natural Sciences II, University of California, Irvine, California 92697, USA.
出版信息
Phys Rev A. 2009 Jan 1;79(1):13823. doi: 10.1103/PhysRevA.79.013823.
Coherent anti-Stokes Raman scattering (CARS) interferometry is used to deplete the anti-Stokes radiation emerging from a tightly focused spot. Near-to-complete depletion of the anti-Stokes radiation is obtained when a phase-controlled local oscillator field at the anti-Stokes frequency is out of phase with the induced CARS field in the focal volume. Unlike in traditional interferometry, this depleted energy is not spatially redistributed. A theoretical analysis shows that the energy loss in the anti-Stokes channel is accompanied by an energy gain in the pump and Stokes channels. Interferometric switching of anti-Stokes radiation may offer a route toward developing high-resolution CARS microscopy.
相干反斯托克斯拉曼散射（CARS）干涉测量法用于耗尽从紧密聚焦光斑出射的反斯托克斯辐射。当反斯托克斯频率的相位控制本地振荡场与焦体积内感应的CARS场异相时，可实现反斯托克斯辐射近乎完全的耗尽。与传统干涉测量法不同，这种耗尽的能量不会在空间上重新分布。理论分析表明，反斯托克斯通道中的能量损失伴随着泵浦通道和斯托克斯通道中的能量增益。反斯托克斯辐射的干涉切换可能为开发高分辨率CARS显微镜提供一条途径。
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