粗糙表面散射基模高斯光束的散射特性实验研究

Experimental Study of Laser Beam Scattering from Random Rough Surface

本文介绍良导体二维粗糙表面对红外激光束的散射分布;讨论不同偏振方式入射时散射光的分布特点,以及中等粗糙表面和弱粗糙表面散射能量在不同入射角下的变化趋势;分析表面参数对分布的影响。文章对观察到的弱粗糙表面散射在镜反射方向附近的边凸现象作了简述;这一现象由散射光的相干叠加而引起,有深入研究的价值。

An experimental study of TEMPOO laser beam scattering from semi-deep andslight perfectly conducting two-dimensional random rough surfaces is performed. The resultsfor the mean scattered intensity as a function of polarization, surface parameters and anglesof incidence are discussed. Most importantly the sidelobe around specular direction is intro-duced, which is considered to be generated by interference of the scattered field from slightlyrough surfaces.