PHASE JUMP AND INTENSITY INSTABILITIES IN A HOMOGENEOUSLY BROADENED BIDIRECTIONAL RING LASER WITH BACKSCATTERING

[摘要] The equations of motion of a single frequency homogeneously broadened ring laser with optical backscattering have been investigated numerically by using Monte Carlo simulation. Studies of the coupled third order equations of motion with additive and multiplicative noise terms show that, under some conditions of backscattering, the laser has two regions of operation. When the magnitude of the backscattering coefficient R is less than a critical value, R(c), which depends on the pump parameter, the laser exhibits the usual noise-induced spontaneous intensity switching. When (R) is larger than R(c), the two modes exhibit steady state anticorrelated oscillations. Jumps of +/- pi in the phase difference of the two counter propagating waves have been demonstrated to occur in both the switching and oscillation regions. Noise-induced transitions from one region to another are also observed when (R) is close to R(c).

[发布日期] 1991-04-01