The Optical Sciences Division, in collaboration with scientists from the Remote Sensing Division and the Naval Center for Space Technology, field-tested a free-space optical (FSO) link for a counter-IED (improvised explosive device) robot. Traditional radio frequency (RF) link command and control of these robots is not possible in the presence of IED RF jammer systems. To solve this problem, a freespace optical link using quantum well based modulating retroreflectors was ...