光束的二阶矩矩阵和~M2因子

详细信息

Second-order moments matrix and M2 factor of optical beams

1.
Institute of Laser Physics and Chemistry, Sichuan University, Chengdu 610064, China;
2.
College of Physics and Communication Electronics, Jiangxi Normal University, Nanchang 330027, China

摘要: 基于4×4二阶矩矩阵,对一般光束的M2因子和本征像散a作了研究,得出复杂像散光束、旋转简单像散光束、准直简单像散光束和无像散光束等一些典型光束的M2因子和本征像散的解析公式,并作了分析。研究表明,一般而言,扭曲会引起本征像散的增加,但却不会影响M2因子。
- 二阶矩 /
- 矩阵表示 /
- M2因子 /
- 本征像散 /
- 扭曲
Abstract: Based on the 4×4 second-order moments matrix,the M2 factor and intrinsic astigmatism a of general optical beams a restudied.The analytical expressions for the M2 factor and intrin sic astigmatism a of some typical types of beam,such as the general astigmatic beam,rotationally simple astigmatic beam,aligned simple astigmatic beam and stigmatic beam,are given and analyzed.It is shown that the twist result is an increase of the intrinsic astigmatism,but doesn't affect the M2 factor in general.
- second-order moment /
- matrix representation /
- M2 factor /
- intrinsic astigmatism /
- twist

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