Send to

Choose Destination

Links from PubMed

See comment in PubMed Commons below
Opt Lett. 2007 Aug 1;32(15):2266-8.

Subcentimeter depth resolution using a single-photon counting time-of-flight laser ranging system at 1550 nm wavelength.

Author information

School of Engineering of Physical Sciences, Heriot-Watt University, Riccarton, Edinburgh, EH14 4AS, UK.


We demonstrate subcentimeter depth profiling at a stand off distance of 330 m using a time-of-flight approach based on time-correlated single-photon counting. For the first time to our knowledge, the photon-counting time-of-flight technique was demonstrated at a wavelength of 1550 nm using a superconducting nanowire single-photon detector. The performance achieved suggests that a system using superconducting detectors has the potential for low-light-level and eye-safe operation. The system's instrumental response was 70 ps full width at half-maximum, which meant that 1 cm surface-to-surface resolution could be achieved by locating the centroids of each return signal. A depth resolution of 4 mm was achieved by employing an optimized signal-processing algorithm based on a reversible jump Markov chain Monte Carlo method.

PubMed Commons home

PubMed Commons

How to join PubMed Commons

    Supplemental Content

    Full text links

    Icon for Optical Society of America
    Loading ...
    Support Center