Non-integer OAM beam shifts of Hermite–Laguerre–Gaussian beams

Abstract

We have studied the effect of non-integer Orbital Angular Momentum (OAM) on OAM enhanced beam shifts, for in-plane (Goos–Hänchen) and out-of-plane (Imbert–Fedorov) shifts, using Hermite–Laguerre–Gaussian beams. Contrary to naive expectation we find, theoretically and experimentally, that the non-integer OAM beam shifts do not interpolate linearly between the integer OAM beam shifts.