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    The development of single-photon counting detectors and arrays has made tremendous steps in recent years, not the least because of various new applications, e.g., LIDAR devices. In this work, a 3D imaging device based on real thermal light intensity interferometry is presented. By using gated SPAD technology, a basic 3D scene is imaged in reasonable measurement time. Compared to conventional approaches, the proposed synchronized photon counting allows the use of more light modes to enhance 3D ranging performance. Advantages like robustness to atmospheric scattering or autonomy by exploiting external light sources can make this ranging approach interesting for future applications.


    Fabian Wagner, Florian Schiffers, Florian Willomitzer, Oliver Cossairt, Andreas Velten. Intensity interferometry-based 3D imaging. Optics express. 2021 Feb 15;29(4):4733-4745

    PMID: 33726023

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