By thermal bonding technology the single-clad YAG/Nd:YAG/YAG planar waveguide crystal has been fabricated. The geometry of the waveguide crystal is 12 mm×5 mm×1 mm, and Nd:YAG core is 0.2 mm thick and symmetry claddings are 0.4 mm thick. A novel pump scheme is employed——edge-bevel pumping: A 12 mm long edge is chamfered as a 0.3 mm wide bevel, the pump light from the fast-axis-collimated laser diode (LD) is focused and coupled into the crystal through the edge bevel. The pump efficiency is 82%, when the transmittance of the output mirror is 6.6% and the diode pump power is 49.5 W, the output power is 13.6 W with flat-flat cavity, the optical-optical conversion efficiency is 27.5%, and the transverse M2 factor is 1.9. The laser achieves a relatively high optical-optical conversion efficiency and excellent beam quality in transverse direction.