Compact laser radar based on a subnanosecond laser diode transmitter and a two-dimensional CMOS single-photon receiver |
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Author: | Huikari, Jaakko1; Jahromi, Sahba1; Jansson, Jussi-Pekka1; |
Organizations: |
1University of Oulu, Faculty of Information Technology and Electrical Engineering, Circuits and Systems Research Group, Oulu, Finland |
Format: | article |
Version: | published version |
Access: | open |
Online Access: | PDF Full Text (PDF, 2.1 MB) |
Persistent link: | http://urn.fi/urn:nbn:fi-fe201804126503 |
Language: | English |
Published: |
SPIE,
2018
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Publish Date: | 2018-04-12 |
Description: |
AbstractA pulsed TOF laser radar utilizing the single-photon detection mode has been implemented, and its performance is characterized. The transmitter employs a QW double-heterostructure laser diode producing 0.6 nJ∕100 ps laser pulses at a central wavelength of ∼810 nm. The detector is a single-chip IC manufactured in the standard 0.35-μmHV CMOS process, including a 9 × 9 single-photon avalanche diode (SPAD) array and a 10-channel time-to-digital converter (TDC) circuit. Both the SPAD array and the TDC circuit support a time gating feature allowing photon detection to occur only within a predefined time window. The SPAD array also supports a 3 × 3 SPADs subarray selection feature to respond to the laser spot wandering effect due to the paraxial optics and to reduce background radiation-induced detections. The characterization results demonstrate a distance measurement accuracy of þ∕ − 0.5 mm to a target at 34 m having 11% reflectivity. The signal detection rate is 28% at a laser pulsing rate of 100 kHz. The single-shot precision of the laser radar is ∼20 mm (FWHM). The deteriorating impact of high-level background radiation conditions on the SNR is demonstrated, as also is a scheme to improve this by means of detector time gating. see all
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Series: |
Optical engineering |
ISSN: | 0091-3286 |
ISSN-E: | 1560-2303 |
ISSN-L: | 0091-3286 |
Volume: | 57 |
Issue: | 2 |
Article number: | 024104 |
DOI: | 10.1117/1.OE.57.2.024104 |
OADOI: | https://oadoi.org/10.1117/1.OE.57.2.024104 |
Type of Publication: |
A1 Journal article – refereed |
Field of Science: |
213 Electronic, automation and communications engineering, electronics |
Subjects: | |
Funding: |
Academy of Finland (Centre of Excellence in Laser Scanning Research, Contract No. 272196 and Contracts Nos. 255359, 283075, and 251571); Finnish Funding Agency for Innovation (TEKES). The authors wish to express their gratitude to both the Academy of Finland and TEKES for supporting this work. |
Academy of Finland Grant Number: |
255359 283075 251571 |
Detailed Information: |
255359 (Academy of Finland Funding decision) 283075 (Academy of Finland Funding decision) 251571 (Academy of Finland Funding decision) |
Copyright information: |
© The Authors. Published by SPIE under a Creative Commons Attribution 3.0 Unported License. Distribution or reproduction of this work in whole or in part requires full attribution of the original publication, including its DOI. [DOI: 10.1117/1.OE.57.2.024104]. |
https://creativecommons.org/licenses/by/3.0/ |