We study self-oscillation in a photorefractive double phase-conjugate mirror and show that it
undergoes an order-disorder phase transition at a critical gain-threshold point. We present …

We model the double phase-conjugate mirror (DPCM) as a function of time, the average
direction of propagation of the two beams forming the DPCM, and one transverse …

Soft-mode onset of coherent oscillation is revealed in a semilinear cavity with two
counterpropagating pump waves. From the dynamics of the oscillation intensity and the …

Considerable slowing down is observed for both the temporal development of the coherent
oscillation slightly above the threshold and the refractive index grating decay slightly below …

The oscillation intensity of a semilinear photorefractive oscillator with reflection gratings is
calculated for different cavity losses, different pump intensity ratios and different crystal …

How the fanning can act as a seed in the formation of the semilinear phase conjugate mirror
and of the two facing double phase conjugate mirror was studied. These phase conjugate …

A new formulation of degenerate four-wave mixing (DFWM) is presented that takes into
account the underlying SU (2) symmetry of the process in transmission. This reduces the …

The solution of the scalar four-mixing equations in the transmission geometry in the
presence of material absorption has been found to represent a difficult problem when …