Research of scattering characteristics of rough dielectric surfaces

JIANG Shu; LAI Jian-cheng; LI Zhen-hua; BIAN Bao-min; LU Jian

doi:10.3969/j.issn.1001-3806.2011.03.024

In order to study the generation mechanism of scattering characteristics of dielectric random surfaces, on the basis of Kirchhoff approximation, light intensity scattered from rough dielectric surfaces was calculated by means of Monte-Carlo method. The geometric profile of rough surfaces obeys Gaussian distribution. All of the surfaces have the same correlation length. With the increase of rms height, the distribution of the scattered intensity is broadened, decreased at its peak value and moved backward. The above phenomena were induced by the combination of the local slope and the reflecting index of local slope. This result provides reference to the research under more complex conditions.

Research of scattering characteristics of rough dielectric surfaces

Corresponding author: LU Jian, lujian@mail.njust.edu.cn

1. Department of Information Physics & Engineering, Nanjing University of Science & Technology, Nanjing 210094, China

Received Date: 2010-07-08

Accepted Date: 2010-08-24

Available Online: 2011-05-25

Abstract: In order to study the generation mechanism of scattering characteristics of dielectric random surfaces, on the basis of Kirchhoff approximation, light intensity scattered from rough dielectric surfaces was calculated by means of Monte-Carlo method. The geometric profile of rough surfaces obeys Gaussian distribution. All of the surfaces have the same correlation length. With the increase of rms height, the distribution of the scattered intensity is broadened, decreased at its peak value and moved backward. The above phenomena were induced by the combination of the local slope and the reflecting index of local slope. This result provides reference to the research under more complex conditions.

HTML

Reference (12)

[1]	MARCUS S,SCOLELLA B D.Solid-state laser syntheilc aperture ladar[J].Applied Optics,1994，33(6)：960-964.
[2]	WANG Ch Y，XIE J，BIAN B M，et al.Optimum signal threshold ratio for improving the ranging accuracy of lidar[J].Laser Technology,2007,31(4):408-411(in Chinese).
[3]	YOSHKAIS S,ARUGA T.Feasibility study of synthetic aperture infrared laser radar techniques for imaging of static and moving objects[J].Applied Optics,1998,37(24)：5631-5639.
[4]	BRUCE N C.Kirchhoff calculations of the coherent scatter from a series of very rough surfaces[J].Applied Optics,1995,34(24):5531-5536.
[5]	CARON J,LAFAIT J,CHRISTINE A.Scalar Kirchhoff's model for light scattering from dielectric random rough surfaces[J].Optics Communications,2002,207(1/6):17-28.
[6]	MA J,GUO L X,CHENG X Zh.Unification of the Kirchhoff approximation and the method of moment for optical wave scattering from the lossy dielectric Gaussian random rough surface[J].Chinese Optics Letters,2009,7(3):259-262.
[7]	JAMES E H,KRYWONOS A,VEMOLD C L.Modified Beckmann-Kirchhoff scattering theory for rough surfaces with large scattering and incident angles[J].Optical Engineering,2007,46(7):078002/1-078002/10.
[8]	SYLVAIN M.Diffuse reflection by rough surfaces:an introduction[J].Comptes Rendus Physique,2005,6(6):663-674.
[9]	BECKMANN P,SPIZZICHINO A.The scattering of electromagnetic waves from rough surface[M].New York:Pergamon Press,1963:80-97.
[10]	TSANG L,KONG J A,DING K H.Scattering of electromagnetic waves:theory and applications[M].New York:Wiley,2001:397-403.
[11]	SANCHEZ-GIL J A,NIETO-VESPERINAS M.Light scattering from random rough dielectric surfaces[J].Journal of the Optical Society of America,1991,8(8):1270-1286.
[12]	ZHENG X B,WEI Q N,XIA Y X.Numerical analysis of scattering from 1-dimensional random rough surfaces[J].Optoelectronics Laser,1997,8(5):398-402(in Chinese).

Research of scattering characteristics of rough dielectric surfaces

Abstract

References

Proportional views

通讯作者: 陈斌, bchen63@163.com

Proportional views