方法利用矩阵光学方法，推导了高斯光束经耦合系统聚焦后束腰宽度和像距的计算公式。
Methods By the matrix optical method, formulae of waist width and imaging distance of focused Gaussian beams through the coupling system are derived.
文章主要针对激光光学系统设计中存在的球差对高斯光束像方束腰半径的影响进行了详细的讨论，并给出了具体关系。
The effect of spherical aberration on the radius of image beam waist in the design of laser optical system is discussed in detail, and the expression is presented.
文摘：首次讨论了用透镜来扩展高斯光束的一般规律，找出了最佳扩展束腰与透镜焦距的关系。
Abstract: the rules of ganssian light beams extended by lens are disscussed firstey and the relation between the optimum waist extended and focal distance of the lens are found out.
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