Fast photorefractive self-focusing in InP:Fe semiconductor at infrared wavelengths

Delphine Wolfersberger (1) , Naima Khelfaoui (1) , Cristian Dan (1) , Nicolas Fressengeas (1) , Hervé Leblond (2)

1 LMOPS - Laboratoire Matériaux Optiques, Photonique et Systèmes
2 POMA - Propriétés Optiques des Matériaux et Applications

Photorefractive beam self-trapping is investigated in InP:Fe and is shown to occur within tens of microseconds after beam switch on. This fast response time is predicted by an analytical theoretical interpretation based on a simple photorefraction model which suggests buildups in a time range consistent with experiments.

Mots clés: semiconductors; indium compounds; iron; optical self-focusing; photorefractive effect; photorefractive materials

Domaines: Optique [physics.optics]

Delphine Wolfersberger, Naima Khelfaoui, Cristian Dan, Nicolas Fressengeas, Hervé Leblond. Fast photorefractive self-focusing in InP:Fe semiconductor at infrared wavelengths. Applied Physics Letters, 2008, 92 (2), pp.021106-1-3. ⟨10.1063/1.2830989⟩. ⟨hal-00216680⟩