Conversion of a high-order mode beam into a nearly Gaussian beam by use of a single interferometric element Academic Article uri icon


  • 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 TEM_10 laser beam are presented. The results reveal that the efficiency of conversion of a HG beam to a nearly Gaussian beam can be as high as 90%.

publication date

  • January 1, 2003