1 西安电子科技大学 理学院，陕西 西安 710071
2 延安大学 物理与电子信息学院，陕西 延安 716000
运用微扰法研究平面波入射分层介质粗糙面的光波透射问题，推出了不同极化状态的透射光波散射系数公式。采用高斯粗糙面来模拟实际的分层介质粗糙面，结合高斯粗糙面的功率谱导出了平面波入射高斯分层介质粗糙面的透射系数计算公式。通过数值计算得到HH极化透射系数随透射光波散射角变化的曲线，讨论底层介质介电常数、中间介质介电常数和厚度、粗糙面参数及入射光波长对透射系数的影响。数值计算结果表明：底层介质介电常数、中间介质介电常数和厚度、粗糙面参数及入射光波长对透射系数的影响是非常复杂的。
光波透射 高斯粗糙面 分层介质 微扰法 透射系数 optical wave transmission Gaussian rough surface layered medium perturbation method transmission coefficient
Author Affiliations
Abstract
1 School of Science, Xidian University, Xi'an 710071
2 College of Physics and Electronic Information, Yan'an University, Yan'an 716000
The optical wave scattering from the slightly rough surface of three-layer medium is studied. The formulaes of the scattering coefficients for different polarizations are derived using the small perturbation method. A Gaussian rough surface is presented for describing rough surface of layered medium, the influence of the permittivity of layered medium, the mean layer thickness of intermediate medium, the surface roughness parameters and the incident wavelength on the bistatic scattering coefficient of HH polarization are obtained and discussed by numerical implementation.
高斯粗糙面 微扰法 分层介质 双站散射系数 290.5880 Scattering, rough surfaces 290.0290 Scattering 240.0240 Optics at surfaces Chinese Optics Letters
2007, 5(10): 605
