We report what is to our best knowledge the first observation of Mathieu-Gauss modes directly generated in an axicon-based stable resonator. By slightly breaking the symmetry of the cavity we were able to generate single lowest and high-order Mathieu-Gauss modes of high quality. The observed transverse modes have an inherent elliptic structure and exhibit remarkable agreement with theoretical predictions.
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Alvarez‐Elizondo et al. (2008) studied this question.
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