J. Morel et al., COHERENT COUPLING OF AN ARRAY OF ND3-DOPED SINGLE-MODE FIBER LASERS BY USE OF AN INTRACAVITY PHASE GRATING(), Optics letters, 18(18), 1993, pp. 1520-1522
We present a method for the coherent coupling of single-mode fiber las
ers that produces a single Gaussian output beam. The output and the sp
ectral properties of an experimental device composed of three coupled
Nd3+ single-mode fiber lasers have been studied. For different couplin
g conditions, typically 70% of the total output power has been produce
d m a single beam. The dynamic behavior of the emission spectrum is di
scussed.