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Fast amplitude modulation up to 1.5 GHz of mid-IR free-space beams at room-temperature

Author

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  • Stefano Pirotta

    (CNRS UMR 9001, Université Paris-Sud, Université Paris-Saclay)

  • Ngoc-Linh Tran

    (CNRS UMR 9001, Université Paris-Sud, Université Paris-Saclay)

  • Arnaud Jollivet

    (CNRS UMR 9001, Université Paris-Sud, Université Paris-Saclay)

  • Giorgio Biasiol

    (Laboratorio TASC, CNR-IOM)

  • Paul Crozat

    (CNRS UMR 9001, Université Paris-Sud, Université Paris-Saclay)

  • Jean-Michel Manceau

    (CNRS UMR 9001, Université Paris-Sud, Université Paris-Saclay)

  • Adel Bousseksou

    (CNRS UMR 9001, Université Paris-Sud, Université Paris-Saclay)

  • Raffaele Colombelli

    (CNRS UMR 9001, Université Paris-Sud, Université Paris-Saclay)

Abstract

Applications relying on mid-infrared radiation (λ ~ 3-30 μm) have progressed at a very rapid pace in recent years, stimulated by scientific and technological breakthroughs like mid-infrared cameras and quantum cascade lasers. On the other side, standalone and broadband devices allowing control of the beam amplitude and/or phase at ultra-fast rates (GHz or more) are still missing. Here we show a free-space amplitude modulator for mid-infrared radiation (λ ~ 10 μm) that can operate at room temperature up to at least 1.5 GHz (−3dB cutoff at ~750 MHz). The device relies on a semiconductor heterostructure enclosed in a judiciously designed metal–metal optical resonator. At zero bias, it operates in the strong light-matter coupling regime up to 300 K. By applying an appropriate bias, the device transitions towards the weak-coupling regime. The large change in reflectance is exploited to modulate the intensity of a mid-infrared continuous-wave laser up to 1.5 GHz.

Suggested Citation

  • Stefano Pirotta & Ngoc-Linh Tran & Arnaud Jollivet & Giorgio Biasiol & Paul Crozat & Jean-Michel Manceau & Adel Bousseksou & Raffaele Colombelli, 2021. "Fast amplitude modulation up to 1.5 GHz of mid-IR free-space beams at room-temperature," Nature Communications, Nature, vol. 12(1), pages 1-6, December.
    • Handle: RePEc:nat:natcom:v:12:y:2021:i:1:d:10.1038_s41467-020-20710-2
    DOI: 10.1038/s41467-020-20710-2
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    Cited by:

    1. Okan Atalar & Raphaël Laer & Amir H. Safavi-Naeini & Amin Arbabian, 2022. "Longitudinal piezoelectric resonant photoelastic modulator for efficient intensity modulation at megahertz frequencies," Nature Communications, Nature, vol. 13(1), pages 1-8, December.

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