Rotating propeller soliton

Summary form only given. Self-trapping of an optical beam occurs when the beam induces, through the nonlinearity, a waveguide structure and, at the same time, is guided in its own induced waveguide. Such beams are commonly referred to as spatial solitons. Here we present analytically, numerically and experimentally a new type of composite soliton: a rotating dipole-soliton. The intensity structure of the soliton constituents rotates throughout propagation. In particular, the dipole mode has a double helix form, and its equal-phase planes are tilted like propeller blades.