Vol. 1, Issue 7, Part N (2015)

Abstract
Laser diodes convert electrical power into a highly collimated beam of optical power that can travel hundreds of metres with minimal loss. Photovoltaic diodes can be used to retrieve electrical power at the other end of this optical link. If all of the optical power is accounted for using information feedback from the receiver, this point-to-point wireless power transmission is safe. Furthermore, safety can be ensured by monitoring the optical beam's periphery. Long wavelength optical fields with wavelengths greater than 1400nm have lower absorption losses and a higher threshold power density ((Poptical (W))/m2) for human safety. We present various technological challenges in the design of such a system, as well as preliminary experimental results that could be integrated into small packages.