A
system incorporating safety features, for
optical power transmission to receivers, comprising an optical
resonator having end reflectors and a
gain medium, a driver supplying power to the
gain medium, and controlling its small
signal gain, a
beam steering apparatus and a controller to control at least the
beam steering apparatus and the driver. The controller responds to a
safety risk occurring in the
system, by outputting a command to change at least some of the small
signal gain of the gain medium, the
radiance of the
optical beam, the power supplied by the driver, the scan speed or the scan direction and position of the
beam steering apparatus, or to register the scan
pose which defines the location of said optical-to-electrical power converter. The controller may also ensure a high overall
radiance efficiency, and may warn of
transmitted power not received by a targeted
receiver.