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arXiv · 2601.17908

Graphical Constructions of Wavefronts and Waist Parameters in Gaussian Beam Optics

Pierre Pellat-Finet
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Abstract

We provide several diagrams for the graphical determination of certain elements of a Gaussian beam based on prior knowledge of other elements. For example, these diagrams allow us to determine the plane of the beam waist and the Rayleigh range from knowledge of two wavefronts constituting the beam, or to determine the size of the light spot on a given wavefront. We also present a simple method for determining the waist position and the Rayleigh range of the image of a Gaussian beam formed by a lens.

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Pierre Pellat-Finet. 2026-01-25. Graphical Constructions of Wavefronts and Waist Parameters in Gaussian Beam Optics. https://arxiv.org/abs/2601.17908

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