部分相干光脉冲经各向异性介质散射的光谱和相干特性

Spectra and Coherence Properties of Partially Coherent Pulse Scattered by Anisotropic Media

根据一级波恩近似和非稳态场的散射理论,研究分析了部分相干光脉冲经各向异性介质散射的光谱和相干特性。通过数值计算给出了介质参数和脉冲参数对各向异性介质散射场光谱密度和光谱相干度的影响。结果表明,与各向同性介质散射场的光谱密度和光谱相干度分布都具有轴对称性分布相比,各向异性介质散射场的光谱密度和光谱相干度分布都不对称。最后对所得主要结果进行了物理解释。

Based on the first-order Born approximation and scattering theory of non-stationary fields, the spectra and coherence properties of partially coherent pulse scattered by anisotropic media are studied and analyzed numerically. The dependences of medium parameters and pulse parameters on the spectral density and spectral degree of coherence of partially coherent pulse scattered by an anisotropic medium are given. Results show that, compared with the case of isotropic medium, the distributions of spectral density and spectral degree of coherence of partially coherent pulse scattered by an anisotropic medium are asymmetrical. Finally, physical interpretation of the main results is given.