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

作　　者：丁超亮[1] 张永涛[1] 王海霞[1] 赵志国[1] 潘留占[1] 

机构地区：[1]洛阳师范学院物理与电子信息学院,洛阳河南471022

出　　处：《光学学报》2013年第7期293-298,共6页Acta Optica Sinica

基　　金：国家自然科学基金(61275150;61108090;61078077);河南省科技厅自然科学基金(112300410062);河南省教育厅科学技术研究重点项目(13A140797);河南省高校科技创新团队和人才支持计划项目(13IRTSTHN020;13HASTIT048)

摘　　要：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.

关 键 词：相干光学 散射 一级玻恩近似 部分相干光脉冲 光谱密度 光谱相干度 

分 类 号：O435[机械工程—光学工程]