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Spectral changes of cosine-Gaussian-correlated Schell-model beams with rectangular symmetry scattered on a
Abstract:
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 sx and sy, effective radius σ of the scattering medium, the initial beam's correlation widths δx and δy, and line width Γ0 of 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.
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