Magnitude- and orientation-steerable beam deflection in self-induced harmonic potentials

In self-induced harmonic potentials, the coaxial superposition of a fundamental Gaussian beam and a (0,1) mode Laguerre-Gaussian beam yields a two-dimensional (2D)--deflection-steerable breathing beam. The magnitude (orientation) of the deflection can be steered by tuning the ratio (initial phase difference) between the two input constituent beams. Besides, the beam rotates around the deflecting straight trajectory the mass center (not the constituent beams' center) undergoes. The results provide an approach for the 2D steering of beam trajectory, which might be of interest for the applications in all-optical information processing.