We introduced the coupling competition and energy transfer between the C=C and C–H vibration modes in the process of cascaded stimulated Raman scattering (SRS) of benzene and methanol mixtures. The results show that when the molar fraction of methanol is 0.9, the SRS process related to Raman activity can be simultaneously induced in different molecules, and the SRS gains involving a common pump pulse are coupled and compete. Two new peaks (992 + 2839) and (992 + 2945) cm−1 appeared, which are attributed to the energy transfer between the C=C ring vibration and the –CH3 stretching vibration. The interaction between adjacent vibrations can produce strong Raman scattering and achieve efficient wavelength conversion, which may provide a simple method for realizing multi-wavelength laser sources.

中文翻译：

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苯-甲醇溶液级联受激拉曼散射过程中C=C与C-H振动之间的耦合竞争与能量传递


我们介绍了苯和甲醇混合物的级联受激拉曼散射（SRS）过程中C=C和C-H振动模式之间的耦合竞争和能量传递。结果表明，当甲醇的摩尔分数为0.9时，不同分子中可以同时诱导与拉曼活性相关的SRS过程，并且涉及公共泵浦脉冲的SRS增益是耦合和竞争的。出现了两个新峰（992 + 2839）和（992 + 2945）cm−1，这归因于C=C环振动和-CH3伸缩振动之间的能量转移。相邻振动之间的相互作用可以产生强烈的拉曼散射，实现高效的波长转换，这可能为实现多波长激光源提供一种简单的方法。