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Non linear interaction of self-accelerating light beams

Abstract : In this thesis we present results concerning the propagation of an Airy beam in a photorefractive crystal. The Airy beam is a multi-lobed beam that keeps the same shape while propagating along a curved trajectory. It can also regenerate its profile while propagating if it is partially blocked. The photorefractive crystal is a nonlinear media. Light can imprint its intensity distribution inside the crystal and a light beam can create its own waveguide. The Airy beam propagation is changed When going through the crystal. The parabolic trajectory changes partially or completely to a solitary straight beam. Furthermore, this propagation behavior is imprinted inside the crystal and this creates a complex waveguiding structure. By changing the Airy beam parameters and the nonlinear response of the crystal, different waveguiding configurations can be obtained. We can therefore create and control an all-optical routing device with potential applications in the field of telecommunications.
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Submitted on : Tuesday, November 10, 2020 - 3:01:09 PM
Last modification on : Wednesday, November 3, 2021 - 7:57:53 AM
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  • HAL Id : tel-02998405, version 1


Thomas Bouchet. Non linear interaction of self-accelerating light beams. Pattern Formation and Solitons [nlin.PS]. Université de Lorraine, 2019. English. ⟨NNT : 2019LORR0312⟩. ⟨tel-02998405⟩



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