Skip to main content
U.S. flag

An official website of the United States government

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Secure .gov websites use HTTPS
A lock ( ) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.

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

Published

Author(s)

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

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.
Citation
Optics Letters
Volume
32
Issue
15

Citation

Warburton, R. , McCarthy, A. , Wallace, A. , Hernandez-Marin, S. , Hadfield, R. , Nam, S. and Buller, G. (2007), Subcentimeter depth resolution using a single-photon counting time-of-flight laser ranging system at 1550 nm wavelength, Optics Letters, [online], https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=32570 (Accessed April 12, 2024)
Created July 29, 2007, Updated October 12, 2021