Influence of alternating field frequency on enhanced photorefractive gain in two-beam coupling

Claudine Besson (1) , Jean-Michel Jonathan (1) , André Villing (1) , Gilles Pauliat (1) , Gérald Roosen (1)

1 Laboratoire Charles Fabry de l'Institut d'Optique / Manolia

We derive an analytic expression describing the intensity and field frequency dependence of photorefractive gain in two-beam coupling under an alternating square-wave electric field. We determine the frequency and intensity ranges over which the gain is maximum and time independent. Experimental results for Bi12GeO20 crystals are presented.

Domaines: Optique [physics.optics]

Claudine Besson, Jean-Michel Jonathan, André Villing, Gilles Pauliat, Gérald Roosen. Influence of alternating field frequency on enhanced photorefractive gain in two-beam coupling. Optics Letters, 1989, 14 (24), pp.1359-1361. ⟨hal-00856623⟩