Gaussian beams and minimum diffraction |
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Authors: | Luis Alfredo |
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Affiliation: | Departamento de Optica, Facultad de Ciencias Físicas, Universidad Complutense, Madrid, Spain. alluis@fis.ucm.es |
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Abstract: | I show that different legitimate measures of the amount of diffraction lead to contradictory conclusions concerning the beam profile that experiences minimum diffraction for a given beam width. In particular, when the Rényi entropy is used, the Gaussian beams no longer provide minimum diffraction, i.e., they do not have maximum quality. |
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