Multiple-beam, spatially mode-locked photorefractive oscillator

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

1 IRCOM - Institut de Recherche en Communications Optiques et Microondes

Mutual locking of four Gaussian beams with prescribed relative amplitudes and phases in a resonator ended by a phase-conjugating mirror is shown. Locking is performed thanks to a pair of mutually matched spatial filters located in the Fourier planes of the resonator. Experimental results are obtained in a cw-oscillator using a barium titanate crystal both as phase-conjugating mirror and amplifying medium.

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

Agnès Desfarges-Berthelemot, Vincent Kermène, Bernard Colombeau, Claude Froehly, Michel Vampouille. Multiple-beam, spatially mode-locked photorefractive oscillator. Optics Communications, 1996, 127, ⟨10.1016/0030-4018(96)00052-1⟩. ⟨hal-01278129⟩