Wj. Firth et Aj. Scroggie, OPTICAL BULLET HOLES - ROBUST CONTROLLABLE LOCALIZED STATES OF A NONLINEAR CAVITY, Physical review letters, 76(10), 1996, pp. 1623-1626
Stable localized states are predicted for a saturable absorber in an o
ptical cavity. These ''bullet holes'' resemble 2D spatial solitons, an
d we demonstrate an optical memory array scheme based on them. A topol
ogical argument shows that one or more unstable localized states coexi
st with the stable bullet hole.