Department of Biomedical Engineering, Texas A&M University, College Station, Texas 77843-3120, USA.
Opt Lett. 2013 May 1;38(9):1551-3. doi: 10.1364/OL.38.001551.
We propose and experimentally validate a technique for four-wave mixing background suppression in coherent anti-Stokes Raman spectroscopy. It is based on the interaction of the signals generated from the Kerr third-order nonlinearity and the cascaded quadratic process in a nonlinear crystal. Theoretical analysis agrees well with the experimental results, which provide a quantitative assessment of different contributions and allow extraction of the nonlinearity parameters.
我们提出并实验验证了一种用于相干反斯托克斯拉曼光谱学中的四波混频背景抑制的技术。它基于非线性晶体中克尔三阶非线性和级联二次过程产生的信号之间的相互作用。理论分析与实验结果吻合良好，为不同贡献提供了定量评估，并允许提取非线性参数。
