Arago spot formation in the time domain

Abstract : Using the space-time duality we theoretically and experimentally revisit the Arago spot formation in the time domain and explore the temporal emergence of a bright spot in the time shadow of an initial waveform. We describe the linear regime of propagation using Fresnel's integrals and show that in the presence of Kerr nonlinearity the Arago spot formation is affected depending on the sign of the dispersion. We finally confirm experimentally the Arago spot formation in the time domain using a telecommunication optical fiber platform.
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Submitted on : Wednesday, February 13, 2019 - 3:03:02 PM
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Christophe Finot, Hervé Rigneault. Arago spot formation in the time domain. Journal of Optics, Institute of Physics (IOP), 2019, 21 (10), pp.105504. ⟨10.1088/2040-8986/ab4105⟩. ⟨hal-02017978⟩

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