Conversion of a high-order mode beam into a nearly Gaussian beam by use of a single interferometric element.

@article{Ishaaya2003ConversionOA,
  title={Conversion of a high-order mode beam into a nearly Gaussian beam by use of a single interferometric element.},
  author={Amiel A. Ishaaya and Galina Machavariani and Nir Davidson and Asher A. Friesem and Erez Hasman},
  journal={Optics letters},
  year={2003},
  volume={28 7},
  pages={
          504-6
        }
}
We present a new, compact, and practical optical mode converter that efficiently transforms a high-order Hermite-Gaussian (HG) laser beam into a nearly Gaussian beam. The mode converter is based on coherently adding different transverse parts of the high-order mode beam by use of a single planar interferometric element. The method, configuration, and experimental results obtained with a pulsed Nd:YAG HG TEM10 laser beam are presented. The results reveal that the efficiency of conversion of a HG… 
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