beam cleaning

Spatio-temporal beam mapping for studying nonlinear dynamics in graded index multimode fiber

We experimentally demonstrate high-resolution mapping of the spatio-temporal dynamics of the beam cleaning process in graded index multimode fibers. This high-resolution characterization reveals the time-dependent nature of the beam self-cleaning process.

Beam self-cleaning in tapered ytterbium-doped multimode fiber with decelerating nonlinearity

We demonstrate Kerr self-cleaning of beams in an Ytterbium doped multimode fiber taper with exponentially decreasing nonlinearity, with no accompanying frequency conversion or spectral broadening.