Extraordinary nonlinear transmission modulation in a doubly resonant acousto-optical structure - Archive ouverte HAL
Journal Articles Optica Year : 2017

Extraordinary nonlinear transmission modulation in a doubly resonant acousto-optical structure

Abstract

Acousto-optical modulators usually rely on coherent diffraction of light by a moving acoustic wave, leading to bulky devices with a long interaction length. We propose a subwavelength acousto-optical structure that instead relies on a double resonance to achieve strong modulation at near-infrared wavelengths. A periodic array of metal ridges on a piezoelectric substrate defines cavities that create a resonant dip in the optical transmission spectrum. The ridges simultaneously support large flexural vibrations when resonantly excited by a radio-frequency signal, effectively deforming the cavities and leading to strongly nonlinear acousto-optical modulation. The nano-optical structure could find applications in highly compact photonic devices.
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Dates and versions

hal-02131428 , version 1 (09-10-2024)

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Vincent Laude, Abderrahmane Belkhir, Abdullah Alabiad, Mahmoud Addouche, Sarah Gaiffe, et al.. Extraordinary nonlinear transmission modulation in a doubly resonant acousto-optical structure. Optica, 2017, 4 (10), pp.1245-1250. ⟨10.1364/OPTICA.4.001245⟩. ⟨hal-02131428⟩
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