  One of the most promising solutions to the problem of limited flight time of
unmanned aerial vehicles (UAVs), is providing the UAVs with power through laser
beams emitted from Laser Beam Directors (LBDs) deployed on the ground. In this
letter, we study the performance of a laser-powered UAV-enabled communication
system using tools from stochastic geometry. We first derive the energy
coverage probability, which is defined as the probability of the UAV receiving
enough energy to ensure successful operation (hovering and communication). Our
results show that to ensure energy coverage, the distance between the UAV and
its dedicated LBD must be below a certain threshold, for which we derive an
expression as a function of the system parameters. Considering simultaneous
information and power transmission through the laser beam using power splitting
technique, we also derive the joint energy and the Signal-to-noise Ratio (SNR)
coverage probability. The analytical and simulation results reveal some
interesting insights. For instance, our results show that we need at least 6
LBDs/10km^2 to ensure a reliable performance in terms of energy coverage
probability.
