部分相干高斯光束的M2因子及模系数
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摘要: 分析了以模式间相互独立的厄米-高斯光束为基底的部分相干高斯光束。导出了部分相干高斯光束的模系数、权重因子和M2因子的表达式，并讨论了各模式权重因子与M2因子之间的关系。研究表明，只需要由实验测得光强分布便可确定部分相干高斯光束的模系数、M2因子和模结构。Abstract: Partially coherent Gaussian beams which can be expanded into an independent superposition of Hermite-Gaussian modes have been analyzed. The analytical expressions for the mode coefficients, the weighting factors and the M2-factor of partially coherent Gaussian beams have been derived. Relation of weighting factors and M2-factor has been discussed. It can be shown from the research work that the mode coefficients, the M2-factor and the mode structure can be determined by means of intensity detection.
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Key words:
- partially coherent gaussian beams /
- m2-factor /
- mode coefficients /
- weighting factors
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