量子电子学报, 2007, 24 (3): 0369, 网络出版: 2010-06-07
泵浦脉冲宽度对受激布里渊散射保真度的影响
The influence of pulse-width on SBS phase conjugation fidelity
非线性光学 相位共轭保真度 列阵相机 声子寿命 受激布里渊散射 nonlinear optics phase conjugation fidelity array camera phonon lifetime stimulated Brillouin scattering
摘要
为了研究泵浦脉冲宽度对受激布里渊散射(SBS)相位共轭保真度的影响,分别采用CCl4、Nhexane、CS2三种不同的SBS介质,在泵浦脉宽分别为12ns、7ns和2ns的情况下,采用列阵相机法对保真度进行实验研究。结果表明:泵浦脉宽对SBS相位共轭保真度有很大影响。当泵浦脉宽远大于介质声子寿命时,保真度保持较高数值,且比较稳定;当泵浦脉宽逐渐接近并近似等于声子寿命时,保真度的值开始逐渐降低,降低的幅度也逐渐增大,稳定性也开始变差;当泵浦脉宽减小到小于声子寿命时,保真度大幅度降低,波动性增大,相位共轭情况很差。
Abstract
In order to research the influence of pulse-width on stimulated Brillouin scattering(SBS)phase conjugation fidelity,experiments were performed on three different SBS media CCl4,N-hexane and CS2. The method of array camera is used under the conditions that pulse-width is respectively 12 ns,7 ns,2 us. Experimental results show that pulse-width has a great influence on SBS fidelity. The fidelity value of SBS has higher standard,and more stability when pulse-width is a greatly larger than phonon lifetime;It gradually falls down when pulse-width equals to phonon lifetime;It declines rapidly and has strong fluctuation when pulse-width is less than phonon lifetime.
张祎, 吕志伟, 何伟明, 王雨雷, 哈斯. 泵浦脉冲宽度对受激布里渊散射保真度的影响[J]. 量子电子学报, 2007, 24(3): 0369. ZHANG Yi, Lü Zhi-wei, HE Wei-ming, WANG Yu-lei, HA Si. The influence of pulse-width on SBS phase conjugation fidelity[J]. Chinese Journal of Quantum Electronics, 2007, 24(3): 0369.