Observation of pressure-induced nonreciprocity in a ring four-wave-mixing oscillator: application to optical gyros.
We have studied the four-wave-mixing oscillation obtained when a cell containing sodium and a buffer gas is enclosed in a ring cavity. The beat frequency Deltanu between the two counterrotating beams is shown to depend on the intensity difference (I(1) - I(2)) between the two pump beams. The curve giving Deltanu as a function of (I(1) - I(2)) is a gyrotype curve, which suggests some possible application for optical gyros.
Grynberg
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Pinard
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Faucheux
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