K. Staliunas et Vj. Sanchezmorcillo, SPATIAL-LOCALIZED STRUCTURES IN DEGENERATE OPTICAL PARAMETRIC OSCILLATORS, Physical review. A, 57(2), 1998, pp. 1454-1457
We show spatial localized structures in degenerate optical parametric
oscillators associated with bistability between two homogeneous soluti
ons of the same amplitude and the opposite phase. These localized stru
ctures are principally different from the ones analyzed previously in
nonlinear optics (including optical parametric oscillators), where bis
tability between different patterns (most often zero-and nonzero-field
states) was at the root. [S1050-2947(98)08201-8].