物理
维格纳分布函数
波前
基础(线性代数)
单色
近轴近似
基函数
空格(标点符号)
曲率
功能(生物学)
梁(结构)
光学
数学分析
数学
几何学
量子力学
计算机科学
进化生物学
量子
生物
操作系统
标识
DOI:10.1088/0256-307x/16/12/013
摘要
On the basis of the space-time Wigner distribution function, we use the least-squares fitting method to derive the relationship between effective wavefront curvature matrices and second-order mixed moments of quasi-monochromatic and polychromatic pulsed paraxial beams. The expressions here are valid for both completely coherent and partially coherent light in the three-dimensional space. Finally, the fitting method is extended to the higher-order situation; from this, a novel technique for characterizing the beam phase from the moments and their derivatives is presented.
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