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