Studies of large amplitude Alfv\'{e}n waves and wave-wave interactions in LAPD

Electromagnetic turbulence is thought to play an important role in plasmas in astrophysical settings (e.g. the interstellar medium, accretion disks) and in the laboratory (e.g. transport in magnetic fusion devices). From a weak turbulence point of view, nonlinear interactions between shear Alfv\'{e}n waves are fundamental to the turbulent energy cascade in magnetic turbulence. An overview of experiments on large amplitude shear Alfv\'{e}n waves in the Large Plasma Device (LAPD) will be presented. Large amplitude Alfv\'{e}n waves ($\delta B/B \sim 1$\%) are generated either using a resonant cavity or loop antennas. Properties of Alfv'{e}n waves generated by these sources will be discussed, along with evidence of heating, background density modification and electron acceleration by the waves. An overview of experiments on wave-wave interactions will be given along with a discussion of future directions.