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24 July 2002Circular and elliptic beam shaping using simple diffractive optics
We propose a new method for transforming an elliptic Gaussian beam, in the near-field, into a circular Gaussian beam in the far field using a very simple diffractive optical element which is a phase slit. We show that a circular Gaussian beam can be transformed into a flat-top profile, a doughnut profile or a ring-shaped profile.
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M. Fromager, Kamel Ait Ameur, Francois Sanchez, "Circular and elliptic beam shaping using simple diffractive optics," Proc. SPIE 4751, ICONO 2001: Nonlinear Optical Phenomena and Nonlinear Dynamics of Optical Systems, (24 July 2002); https://doi.org/10.1117/12.475968