Spectral changes of cosine-Gaussian-correlated Schell-model beams with rectangular symmetry scattered on a deterministic medium.
Based on the theory of first-order Born approximation, analytical expressions for rectangular cosine-Gaussian Schell-model (RCGSM) beams scattered on a deterministic medium in the far zone are derived. In terms of the analytical formula obtained, the changes of a RCGSM beam's scattered spectrum are numerically investigated. Results show that several parameters (including the scattering directions sxand sy, effective radius σ of the scattering medium, the initial beam's correlation widths δxand δy, and line width Γ0of the incident spectrum) closely influence the distributions of the normalized scattered spectrum in the far zone. These features of a RCGSM beam scattered spectrum can be used to obtain information about the structure of a deterministic medium.
Xun
X
Wang
Zhirong
Z
Liu
Kelin
K
Huang
Deming
D
Zhu