17 August 2010 Long-range depth imaging using time-correlated single-photon counting
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Active, three-dimensional long-range imaging has varied applications in a number of disciplines, including manufacturing, environmental sensing and defence. Common constraints often include low average and peak illumination powers to ensure eye-safety, making the potentially high sensitivity of the single-photon counting technique a distinct advantage. We present a scanning time-of-flight imager based on high repetition-rate (>MHz) pulsed illumination and a silicon single-photon detector. In advanced photon-counting experiments, we recently employed the system for unambiguous range resolution at several kilometres target distance, multiple-surface resolution based on adaptive algorithms, and a cumulative data acquisition method that facilitates detector characterisation and evaluation. This article reviews these achievements and identifies multi-spectral imaging as a possible future application.
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Nils J. Krichel, Nils J. Krichel, Aongus McCarthy, Aongus McCarthy, Andrew M. Wallace, Andrew M. Wallace, Jing Ye, Jing Ye, Gerald S. Buller, Gerald S. Buller, } "Long-range depth imaging using time-correlated single-photon counting", Proc. SPIE 7780, Detectors and Imaging Devices: Infrared, Focal Plane, Single Photon, 77801I (17 August 2010); doi: 10.1117/12.876144; https://doi.org/10.1117/12.876144

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