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Generalised Hermite-Gaussian beams and mode transformations

Generalised Hermite-Gaussian modes (gHG modes), an extended notion of Hermite-Gaussian modes (HG modes), are formed by the summation of normal HG modes with a characteristic function $α$, which can be used to unite conventional HG modes and Laguerre-Gaussian modes (LG modes). An infinite number of normalised orthogonal modes can thus be obtained by modulation of the function $α$. The gHG mode notion provides a useful tool in analysis of the deformation and transformation phenomena occurring in propagation of HG and LG modes with astigmatic perturbation.

preprint2016arXivOpen access
Yi WangYujie ChenYanfeng ZhangHui ChenSiyuan Yu
physics.optics
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Yi WangYujie ChenYanfeng ZhangHui ChenSiyuan Yu

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