Figure 1
From: Quasioptics for increasing the beam efficiency of wireless power transfer systems

(a) Generic quasioptical wireless power transfer system overview. (b) Representation of the gaussian beam radius throughout the complete system.
From: Quasioptics for increasing the beam efficiency of wireless power transfer systems

(a) Generic quasioptical wireless power transfer system overview. (b) Representation of the gaussian beam radius throughout the complete system.