Multi-target two-photon dual-comb LiDAR

Hollie Wright*, Alexander J. M. Nelmes, Nick J. Weston, Derryck T. Reid

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

2 Citations (Scopus)
38 Downloads (Pure)

Abstract

By substituting two-photon cross-correlation in a wide-bandgap photodiode for the coherent gating conventionally used in dual-comb ranging, two-photon dual-comb LiDAR exchanges data-intensive interferometric acquisition for a single time-stamp from which an absolute distance can be inferred. Here, we report the application of two-photon dual-comb LiDAR to obtain real-time ranging to three independent targets with only a single silicon-photodiode detector. We show precisions of 197–255 nm (2 seconds averaging time) for static targets, and real-time simultaneous ranging to three dynamic targets driven by independent sinusoidal, saw-tooth and square waveforms. Finally, we demonstrate multi-target ranging to three points on a rigid body to provide simultaneous pitch and yaw angular measurements with precisions of 27.1 arcsec (130 µrad) on a 25 mm baseline.

Original languageEnglish
Pages (from-to)22497-22506
Number of pages10
JournalOptics Express
Volume31
Issue number14
Early online date21 Jun 2023
DOIs
Publication statusPublished - 3 Jul 2023

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics

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