SPATIAL OPTICAL TRANSMISSION DEVICE AND SPATIAL OPTICAL COMMUNICATION METHOD

摘要

In spatial optical transmission devices, it is difficult to send a beacon beam stably and inexpensively, and stable tracking cannot be maintained. Therefore, this spatial optical transmission device has: a laser beam delivery means for delivering a plurality of mutually interferable laser beams that differ from each other in terms of temporal changes either in the optical frequency or in the phase difference; and a wavefront control beam delivery means whereby a plurality of wavefront control beams obtained by providing the plurality of laser beams with mutually different wavefronts is delivered to a free space.