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Article Dans Une Revue Journal of Modern Optics Année : 2022

Equal-efficiency diffraction of unpolarized wideband light with acousto-optic filters

Résumé

We present the diffraction of unpolarized light over a broad wavelength range using paratellurite Acousto-Optic Tuneable Filters. The diffraction of unpolarized light usually relies on a specific operating point that is sensitive to the wavelength and angle of incidence, resulting in an operating ability over a narrow bandwidth. We present a detuning strategy to eliminate the angular dependence and obtain equal diffraction efficiency for both the linear polarization states over a broad bandwidth. We explain how to find the optimum operating frequency and present its dependency as a function of the wavelength. With the quasi-phase matching condition presented, the diffraction of unpolarized light over the 400 nm to700 nm band is possible with an efficiency of over 80%.
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Dates et versions

hal-03699158 , version 1 (23-06-2022)

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Samuel Dupont, Justine Champagne, Jean-Claude Kastelik. Equal-efficiency diffraction of unpolarized wideband light with acousto-optic filters. Journal of Modern Optics, 2022, 69 (13), 10 p. ⟨10.1080/09500340.2022.2085336⟩. ⟨hal-03699158⟩
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