Generating higher-order radial Laguerre-Gaussian modes using a digital laser

Abstract

Using the digital laser one can generate various types of modes, like, Laguerre-Gaussian modes. The digital laser was forced to generate high-order radial Laguerre-Gaussian modes, LGp , with zero azimuthal order, by loading a digital hologram on the spatial light modulator. Digital holograms contain p absorption rings that matches the zeros of Laguerre polynomial. The purity modes were demonstrated and it was shown that the mode volume is directly proportional to the mode order p. In this work we demonstrated that we can generate radial Laguerre-Gaussian modes up to radial order 3.