Phase-locking and self-imaging properties of a Talbot resonator applied tocircular structures

The geometry of diode-pumped high power multicore fiber (MCF) lasers is cha racterized by many individual laser emitters (microcores) placed on a ring inside a large pump core. These microcores form a circular laser array. The circular geometry leads to a quite different behavior compared to linear a rrays when a Talbot resonator is used for phase-locking. We investigate ana lytically and numerically phase-locking and self-imaging properties of a Ta lbot resonator applied to a MCF. Phase-locking of a MCF in a Talbot cavity is demonstrated in the experiment by using a standard mirror with uniform r eflectivity. (C) 2001 Elsevier Science B.V. All tights reserved.