Dumb idea. Radiation drops off as to the square of the distance.
Organisms in the path of the invisible radiation will receive radiation.
If ground-based it will have to be turned off for around 14 hours daily.
Tracking it with the signal round-trip delay time, times two, will be critical and difficult. Providing a means to turn it off if some other object gets in the path of the radiation sounds good, but isn’t-it can not be shut off quickly due to the delay time. More? no, that’s enough.
That tricky old Inverse Square Law......................