A coherent optical link through the turbulent atmosphere

Abstract

We describe the realization of a 5 km free space coherent optical link through the turbulent atmosphere between a telescope and a ground target. We present the phase noise of the link, limited mainly by atmospheric turbulence and mechanical vibrations of the telescope and the target. We discuss the implications of our results for applications, with particular emphasis on optical Doppler ranging to satellites and long distance frequency transfer.

version 2, modified following comments from colleagues and reviewers

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• Long-distance frequency transfer over an urban fiber link using optical phase stabilization
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