Stimulated low-frequency Raman scattering (SLFRS) with a maximum efficiency conversion of up to 50% was registered in a water suspension of silica nanoparticles. The dispersion relations of the SiO 2 spheres’ acoustic modes in the surrounding water and the damping parameters were estimated. The experimentally obtained SLFRS frequency shift corresponding to the nanoparticles’ acoustic eigenfrequency relates to the breathing mode (n = 1, l = 0).

中文翻译：

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电介质亚微米颗粒水悬浮液中的高效率激发低频拉曼散射

在二氧化硅纳米粒子的水悬浮液中记录了最大效率转换高达50％的受激低频拉曼散射（SLFRS）。估算了SiO 2球形声模在周围水中的色散关系和阻尼参数。实验获得的对应于纳米粒子声学特征频率的SLFRS频移与呼吸模式有关（n = 1，l = 0）。