光学学报, 2007, 27 (3): 471, 网络出版: 2007-03-15
相干模表示的部分相干高斯谢尔光束的相位空间积
Phase-Space Product of Beam from Gaussian Schell-Model Source by Using Coherent-Mode Representation
激光光学 部分相干光源 光束质量 相干模表示 高斯谢尔模型光束 互谱密度 角度相关函数 laser optics partially coherent source beam quality coherent-mode representation Gaussian Schell-model beam cross-spectral density angular correlation function
摘要
与传统的相干激光光束的评价不同, 对部分相干光束质量进行评价时, 不仅要反映其远场发散特性, 而且还要能体现光源本身的部分相干性。根据部分相干光的相干模表示法, 推导了由部分相干光源所产生光束的相位空间积Q。与前人在相干光源情形下得到的结论相比, 得出的相位空简积Q不仅包含各个全相干模基元线性组合的贡献, 而且还有来自不同的全相干模基元之间相互作用的贡献。
Abstract
Unlike traditional coherent laser beams, the beam quality evaluation of partially coherent beams involves not only its far-field radiation characteristic but also partial coherence of the light source itself. The generalized expression for the phase-space product Q of a beam generated from a partially coherent source is presented by using coherent-mode representation of partially coherent beams. Compared with the result for the fully coherent light source obtained in previous works, the derived expression for Q includes not only contributions directly from the linear combination of each individual elementary fully coherent modes but also interactions between different elementary modes.
鲁伟, 刘立人, 孙建锋, 阳庆国, 李大汕. 相干模表示的部分相干高斯谢尔光束的相位空间积[J]. 光学学报, 2007, 27(3): 471. 鲁伟, 刘立人, 孙建锋, 阳庆国, 李大汕. Phase-Space Product of Beam from Gaussian Schell-Model Source by Using Coherent-Mode Representation[J]. Acta Optica Sinica, 2007, 27(3): 471.