title: Observation of pressure-induced nonreciprocity in a ring four-wave-mixing oscillator: application to optical gyros.
abstract: 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.
authors.forename: G
authors.initials: G
authors.lastname: Grynberg
authors.forename: M
authors.initials: M
authors.lastname: Pinard
authors.forename: M
authors.initials: M
authors.lastname: Faucheux