ENTRAINMENT OF SOLID-STATE LASER ARRAYS

We find that the natural antiphasing tendency in linear solid-state la ser arrays can be overcome by an injected field, even if the N element s are not identical. We derive a condition for full entrainment that a grees well with numerical simulations using experimentally accessible parameters. The resulting output intensity saturates near the maximum coherent value of NZ times that of a single laser. We find that the en trained output can be modulated in a prescribed manner by a suitable c hoice of the injected field.