红外与激光工程, 2004, 33 (5): 549, 网络出版: 2006-05-25
粗糙表面光散射特性研究与光学常数反演
Research on light scattering characteristics of rough surface and optical constants deduction
粗糙表面 双向反射分布函数 半球反射率谱 等效光学常数 Rough surface BRDF Hemisphere reflectivity spectrum Equivalent optical constant
摘要
测量了特殊的镀金聚酯薄膜、镀铝绝热材料和硅化合物材料表面的激光(1.06 μm)双向反射分布函数、光镜反射率谱、总体反射率谱以及等效光学常数,利用多参数优化的遗传算法,建立了材料表面的BRDF统计模型.并采用Powell算法反演了铝基绝热材料在不同波段上、某一波长的光学常数.
Abstract
The LBRDF(1.06 μm) ,equivalent optical constant dispersion, specular reflectivity spectrum and total hemisphere reflectivity spectrum of gilded film, plating aluminous adiabatic material and silicic compound for rough surfaces are measured. The methods of specular reflective intensity are utilized to calculate the root mean square of the gilded film and adiabatic material surface roughness. Based on measured data of LBRDF, the poly-parameter genetic optimized algorithms are utilized to create statistical BRDF model of above-mentioned material. According to the ellipsometry measuring the optical constants, the Powell optimum method is used to deduce these data with certain wavelength for adiabatic material in different waveband.
王明军, 董雁冰, 吴振森, 邓蓉, 王云强. 粗糙表面光散射特性研究与光学常数反演[J]. 红外与激光工程, 2004, 33(5): 549. 王明军, 董雁冰, 吴振森, 邓蓉, 王云强. Research on light scattering characteristics of rough surface and optical constants deduction[J]. Infrared and Laser Engineering, 2004, 33(5): 549.
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