Abstract
A 400-m optical path is constructed through the atmosphere using a self-pumped phase-conjugate mirror (PCM) of a photorefractive BaTiO3 crystal as a retroreflector. Intensity fluctuations of laser beams are reduced by 10 dB compared to the case of a conventional plane reflecting mirror. Moreover, some additional advantages of using the PCM in such a long-optical-path system are discussed.
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