Coincidence Photon-Counting Laser Ranging for Moving Targets With High Signal-to-Noise Ratio

Author

Zeyu Bao ; Zhaohui Li ; Yafan Shi ; Wu, E. ; Guang Wu ; Heping Zeng

Author_Institution

State Key Lab. of Precision Spectrosc., East China Normal Univ., Shanghai, China

Volume

26

Issue

15

fYear

2014

fDate

Aug.1, 1 2014

Firstpage

1495

Lastpage

1498

Abstract

We demonstrated a coincidence photon-counting laser ranging technique that allows for single-shot measurements on fast-moving objects under strong background light illumination. Coincidences registered by two single-photon detectors within a short time window of 2.4 ns were recorded as the distance information, improving the signal-to-noise ratio to 8.54 dB when the surrounding noise photons caused 5 × 10⁶ counts/s while the signal pulses contained 10 photons per pulse. Single-shot ranging of both moving and fast position-changing targets was demonstrated with high signal-to-noise contrast at few-photon level.

Keywords

laser ranging; object detection; photodetectors; photon counting; coincidence photon-counting laser ranging technique; fast position-changing targets; fast-moving objects; few-photon level; high signal-to-noise ratio; moving targets; noise photons; signal pulses; single-photon detectors; single-shot measurements; single-shot ranging; strong background light illumination; time 2.4 ns; Detectors; Distance measurement; Laser beams; Measurement by laser beam; Optimized production technology; Photonics; Signal to noise ratio; Coincidence photon counting; laser ranging; single photon detector;

fLanguage

English

Journal_Title

Photonics Technology Letters, IEEE

Publisher

ieee

ISSN

1041-1135

Type

jour

DOI

10.1109/LPT.2014.2327118

Filename

6823114