Kilometre-range, high resolution depth imaging using 1560 nm wavelength single-photon detection

Aongus McCarthy, Nils J. Krichel, Nathan R. Gemmell, Ximing Ren, Michael G. Tanner, Sander N. Dorenbos, Val Zwiller, Robert H. Hadfield, Gerald S. Buller

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This paper highlights a significant advance in time-of-flight depth imaging: by using a scanning transceiver which incorporated a free-running, low noise superconducting nanowire single-photon detector, we were able to obtain centimeter resolution depth images of low-signature objects in daylight at stand-off distances of the order of one kilometer at the relatively eye-safe wavelength of 1560 nm. The detector used had an efficiency of 18% at 1 kHz dark count rate, and the overall system jitter was ~100 ps. The depth images were acquired by illuminating the scene with an optical output power level of less than 250 µW average, and using per-pixel dwell times in the millisecond regime.
Original languageEnglish
Pages (from-to)8904-8915
Number of pages12
JournalOptics Express
Issue number7
Publication statusPublished - 8 Apr 2013
EventInternational Quantum Electronics Conference 2013 - Munich, Germany
Duration: 12 May 201316 May 2013


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