Retro-reflectors often find use in long-range laser propagation experiments. They double the propagation distance andcancel atmospheric tip/tilt alleviating the hardware requirements on the laser transceiver system. On the other hand, theeffects that a retro-reflector can have on collimated or focused laser beams have not been thoroughly investigated.Additionally, for use in combination with beams carrying orbital angular momentum, which become increasingly popularin free-space optical communications, retro-reflector’s effect must also be analysed. Demodulation efficiency of acommunications system based on such beams is very sensitive to the fidelity of helical wavefronts and thereforeretroreflector’s effect on both amplitude and phase for collimated and focused orbital angular momentum beams shouldbe studied.
展开▼
