CARS相邻能级选择激发最佳可调参数的设计

Design of best adjustable parameters of selective excitation of CARS

在其他实验参数都确定的情况下,通过进一步调整泵浦光、斯托克斯光和探测光的相位函数,计算对称与反对称伸缩振动的光极化强度峰值之比为最优,来实现甲醇溶液中CH_3对称和反对称伸缩振动相干反斯托克斯拉曼光谱(CARS)的选择激发。采用Silberberg提出的控制方法,通过参数调整实验,总结了各可调参数对选择激发效果的影响,并根据相关理论,定性分析了该控制方法的内部控制机理及最佳可调参数的范围,最后总结实现相邻能级选择激发的参数调控方法。

In the case of other experimental parameters are determined, by further adjusting the phase functions of the pump, Stokes and probe lights, the selective excitation of coherent anti-Stokes Raman spectra （CARS） of the CH3 symmetric and asymmetric stretching vibration of methanol solution is achieved. Using the control method proposed by Silberberg, the effect of various adjustable parameters on the selective excitation is summarized by means of parameters adjustment experiments. And according to the relevant theory, control mechanism of the control method and approximate range of the best adjustable parame- ters are qualitatively analyzed. At last, the parameters adjustment method of the selective excitation is summarized.