高斯光束经复合光学系统的聚焦特性
Focusing properties of Gaussian beams through a compound optical system
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摘要: 讨论了高斯光束经由凹透镜，子系统和凸透镜构成的复合光学系统的聚焦特性，利用矩阵光学方法，推导出了高斯光束经复合光学系统聚焦后束腰宽度和像距的计算公式。计算例表明，选择适当参数的复合光学系统，既可以获得较小的束腰宽度，又可以获得较长的像距。Abstract: The focusing properties of Gaussian beams through a compound optical system consisting of a concave lens, a convex lens and a subsystem, are discussed. Based on the matrix optical method, formulae of the waist width and imaging distance of focused Gaussian beams through the system are derived. It is shown that the system is capable of achieving both smaller focused waist width and larger imaging distance. The results are illustrated and confirmed with numerical calculation examples.
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Key words:
- gaussian beam /
- compound optical system /
- focusing property
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