Acta Optica Sinica, Volume. 31, Issue 2, 229001(2011)
Optical Constants Deduction and Scattering Bidirectional Reflectance Distribution Function Computation of Alloy Aluminum Surface in Near Infrared Waveband
Polishing alloy aluminum sample′s specular reflection spectrum in waveband 0.5~1.5 μm is measured by spectrophotometer, then it can be extrapolated to the all band by using constant and power function extrapolation. According to Kramers-Kronig(K-K) method, complex refractive index and dielectric constant of this sample in waveband 0.5~2.5 μm are deduced, this result well coincides with ellipsometer′s data in waveband 0.5~1.5 μm. The rough alloy aluminum sample′s scattering bidirectional reflectance distribution function(BRDF) at 1.06 μm is calculated using Kirchhoff method and deduced dielectric constant, which well coincides with BRDF measurer′s data. Roughness parameters and dielectric constants extrapolated in waveband 1.5~2.5 μm is used to calculate scattering BRDF of the rough alloy aluminum sample in this waveband.
Get Citation
Copy Citation Text
Yang Yufeng, Wu Zhensen, Cao Yunhua. Optical Constants Deduction and Scattering Bidirectional Reflectance Distribution Function Computation of Alloy Aluminum Surface in Near Infrared Waveband[J]. Acta Optica Sinica, 2011, 31(2): 229001
Category: Scattering
Received: May. 10, 2010
Accepted: --
Published Online: Jan. 30, 2011
The Author Email: Yufeng Yang (yfyang@mail.xidian.edu.cn)