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In this paper we present a design for a photon-counting optical receiver-based on superconducting NbN nanowire detector arrays-that will be employed in the ground terminal for the NASA Lunar Laser Communications Demonstration. The ground receiver is designed with four, 40 cm apertures, each coupled to a novel multi-mode polarization-maintaining fiber. The receiver is designed to receive a variable-rate...
We demonstrate transmission spectroscopy between a monostatic transceiver based on a wavelength-beam-combined quantum-cascade-laser array and a retroreflector placed at 35 meters.
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