N. Khelfaoui, D. Wolfersberger, C. Dan, H. Leblond, N. Fressengeas
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Fast photorefractive self-focusing in InP:Fe semi-conductor at infrared wavelengths
The fast self-trapping behaviour of an infrared beam in photorefractive InP:Fe is studied experimentally and theoretically versus the intensity. The laser is shown to be self-focused in less than a millisecond at telecommunications intensities.