P. N. Lebedev Physical Institute, Russian Academy of Sciences, Moscow, Russia.
Opt Lett. 2013 Mar 15;38(6):824-6. doi: 10.1364/OL.38.000824.
In this Letter we report on experimental observation of stimulated low-frequency Raman scattering (SLFRS) in gold and silver nanoparticle suspensions excited by 20 ns ruby laser pulses, SLFRS propagated in forward and backward directions with a maximum conversion efficiency up to 20%. Frequency shift for silver nanoparticle suspension was found to be 0.33 THz and for gold nanoparticle suspension 0.435 THz. This type of stimulated scattering of light can be used as an effective source of biharmonic pumping for solving a large number of practical tasks.
在这封信件中，我们报告了在 20ns 红宝石激光脉冲激发的金和银纳米粒子悬浮液中观察到的受激低频 Raman 散射（SLFRS）的实验结果，SLFRS 在正向和反向传播，最大转换效率高达 20%。发现银纳米粒子悬浮液的频率移动为 0.33THz，金纳米粒子悬浮液的频率移动为 0.435THz。这种类型的光受激散射可用作双谐波泵浦的有效光源，以解决大量实际任务。
