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

The geometry of diode-pumped high power multicore fiber (MCF) lasers is characterized 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 arrays when a Talbot resonator is used for phase-locking. We investigate analytically and numerically phase-locking and self-imaging properties of a Talbot 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 reflectivity.

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