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

Ryan E. Warburton, Aongus McCarthy, Andrew M. Wallace, Sergio Hernandez-Marin, Robert H. Hadfield, Sae Woo Nam, Gerald S. Buller

Research output: Contribution to journalArticle

94 Citations (Scopus)

Abstract

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. © 2007 Optical Society of America.

Original languageEnglish
Pages (from-to)2266-2268
Number of pages3
JournalOptics Letters
Volume32
Issue number15
DOIs
Publication statusPublished - 1 Aug 2007

Fingerprint Dive into the research topics of 'Subcentimeter depth resolution using a single-photon counting time-of-flight laser ranging system at 1550 nm wavelength'. Together they form a unique fingerprint.

  • Cite this