Highly efficient phase locking of four diode pumped Nd:YAG laser beams

Stéphane Ménard (1) , Michel Vampouille (1) , Agnès Desfarges-Berthelemot (1) , Vincent Kermène (1) , Bernard Colombeau (1) , Claude Froehly (1)

1 IRCOM - Institut de Recherche en Communications Optiques et Microondes

We describe the mutual phase-locking of four Nd:YAG beams longitudinally end-pumped by four fiber-coupled diode lasers. Mutual phase-locking is performed by two types of diffractive components located inside a telescopic Fabry–Perot resonator. The control of the phase-locking is shown and the different spatial eigenmodes connected with the pumping geometry in the resonator are theoretically and experimentally studied. 1.2 W is obtained in a single mode stable pattern with 30% optical-to-optical conversion efficiency in the continuous wave regime.

Domaines: Sciences de l'ingénieur [physics]; Optique / photonique

Stéphane Ménard, Michel Vampouille, Agnès Desfarges-Berthelemot, Vincent Kermène, Bernard Colombeau, et al.. Highly efficient phase locking of four diode pumped Nd:YAG laser beams. Optics Communications, 1999, 160, ⟨10.1016/S0030-4018(98)00655-5⟩. ⟨hal-01278037⟩