Laabs H, Eppich B, Weber H
Technische Universität Berlin, Optisches Institut, Germany.
J Opt Soc Am A Opt Image Sci Vis. 2002 Mar;19(3):497-504. doi: 10.1364/josaa.19.000497.
Phase-space representations of optical beams such as the ambiguity function or the Wigner distribution function have recently gained considerable importance for the characterization of coherent and partially coherent beams. There is growing interest in beam properties such as the beam propagation factor and the coherence and phase information that can be extracted from these phase-space representations. A method is proposed to decompose a partially coherent beam into Hermite-Gaussian modes by using the ambiguity function. The modal weights and the possible phase relations of the Hermite-Gaussian modes are retrieved. The method can also be applied for the decomposition of the Wigner distribution function. Some examples are discussed in the scope of beam characterization.
诸如模糊函数或维格纳分布函数等光束的相空间表示，最近在表征相干光束和部分相干光束方面变得相当重要。人们对诸如光束传播因子以及可从这些相空间表示中提取的相干和相位信息等光束特性的兴趣与日俱增。提出了一种利用模糊函数将部分相干光束分解为厄米 - 高斯模式的方法。检索到了厄米 - 高斯模式的模式权重和可能的相位关系。该方法也可应用于维格纳分布函数的分解。在光束表征的范围内讨论了一些示例。
