5 October 2005 Observation of critical self focusing during propagation of femtosecond light pulses in bulk media
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Abstract
We present an experimental and theoretical study of the nonlinear propagation of 90 fs laser pulses at 800 nm in bulk fused silica. An unexpected behavior of the off-axis emission for pulse energy corresponding to the supercontinuum generation threshold has been discovered. Our model, based on 3D Nonlinear Schrodinger Equation, well explains the observed nonlinear dynamics. For the first time we experimentally confirm that the onset of the supercontinuum generation is inevitably accompanied by the pulse collapse in transverse dimensions.
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Piotr Wasylczyk, Piotr Wasylczyk, Wojciech Wasilewski, Wojciech Wasilewski, Marek Trippenbach, Marek Trippenbach, Czesław Radzewicz, Czesław Radzewicz, "Observation of critical self focusing during propagation of femtosecond light pulses in bulk media", Proc. SPIE 5949, Nonlinear Optics Applications, 59491M (5 October 2005); doi: 10.1117/12.622554; https://doi.org/10.1117/12.622554
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