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Article Dans Une Revue Optics Express Année : 2023

Heterodyne coherent detection of phase modulation in a mid-infrared unipolar device

Résumé

Phase modulation is demonstrated in a quantum Stark effect modulator designed to operate in the mid-infrared at wavelength around 10 µm. Both phase and amplitude modulation are simultaneously resolved through the measurement of the heterodyne signal arising from the beating of a quantum cascade laser with a highly stabilized frequency comb. The highest measured phase shift is more than 5 degrees with an associated intensity modulation of 5 %. The experimental results are in full agreement with our model in which the complex susceptibility is precisely described considering the linear voltage dependent Stark shift of the optical resonance.
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Dates et versions

hal-04245497 , version 1 (24-11-2023)

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Hamza Dely, Baptiste Chomet, Thomas Bonazzi, Djamal Gacemi, Angela Vasanelli, et al.. Heterodyne coherent detection of phase modulation in a mid-infrared unipolar device. Optics Express, 2023, 31 (19), pp.30876. ⟨10.1364/OE.493162⟩. ⟨hal-04245497⟩
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