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CCl_4、N- hexane、CS_2三种不同的SBS介质,在泵浦脉宽分别为12 ns、7 ns和2 ns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．
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 ns. 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.
出处
《量子电子学报》
CAS
CSCD
北大核心
2007年第3期369-373,共5页
Chinese Journal of Quantum Electronics
关键词
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
