Half-width of intensity profiles of light scattered from self-affine fractal random surfaces and simulational verifications.
Based on the fact that the half-width of the Fourier transform is inversely proportional to that of a symmetrical primary decay function, the half-width of the intensity profiles of light scattered from self-affine fractal random surfaces in the whole k( perpendicular ) region is studied. The primary function, whose Fourier transform is the intensity profile, is approximated with a simple mathematical decay function by equating their half-widths and maximums. The expression obtained for the half-width of the scattered intensity profiles reduces to the present results in the two extreme cases with the scattering roughness factors being either very small or very large. For a complete verification, we perform a simulation of the light scattering, in which self-affine fractal random surfaces are generated with an algorithm that is an analogy to the formation of laser speckles. The simulated and theoretical results conform well.
Department of Physics, Shandong Normal University, Jinan, Shandong 250014, People's Republic of China.
Chuanfu
C
Cheng
Chunxiang
C
Liu
Shuyun
S
Teng
Ningyu
N
Zhang
Man
M
Liu