University of Oulu

Sahba S. Jahromi, Jussi-Pekka Jansson, Pekka Keränen, Eugene A. Avrutin, Boris S. Ryvkin, and Juha T. Kostamovaara "Solid-state block-based pulsed laser illuminator for single-photon avalanche diode detection-based time-of-flight 3D range imaging," Optical Engineering 60(5), 054105 (21 May 2021).

Solid-state block-based pulsed laser illuminator for single-photon avalanche diode detection-based time-of-flight 3D range imaging

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Author: Jahromi, Sahba S.1; Jansson, Jussi-Pekka1; Keränen, Pekka1;
Organizations: 1University of Oulu, Circuits and Systems Research Unit, ITEE Faculty, Finland
2University of York, Department of Electronic Engineering, England, United Kingdom
3A.F. Ioffe Physico-Technical Institute, St. Petersburg, Russia
Format: article
Version: published version
Access: open
Online Access: PDF Full Text (PDF, 1.9 MB)
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Language: English
Published: SPIE, 2021
Publish Date: 2021-08-13


A laser diode illuminator for single-photon avalanche diode detection-based pulsed time-of-flight 3D range imaging is presented. The illuminator supports a block-based illumination scheme and consists of a 16-element custom-designed common anode quantum-well laser diode bar working in the enhanced gain switching regime and lasing at ∼810  nm. The laser diode elements are separately addressable and driven with gallium nitride drivers, which produce current pulses with a width of ∼2  ns; the current pulse amplitude was estimated from the supply voltage (90 V) as 5 to 10 A. Cylindrical optics are used to produce a total illumination field-of-view of 40  ×  10  deg2 (full width at half maximum) in 16 separately addressable blocks. With a laser pulsing frequency of 256 kHz and laser pulse energy of ∼8.5  nJ, the average optical illumination power of the transmitter is 2.2 mW.

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Series: Optical engineering
ISSN: 0091-3286
ISSN-E: 1560-2303
ISSN-L: 0091-3286
Volume: 5
Issue: 60
Article number: 054105
DOI: 10.1117/1.OE.60.5.054105
Type of Publication: A1 Journal article – refereed
Field of Science: 213 Electronic, automation and communications engineering, electronics
Funding: This work was supported financially by the Academy of Finland (Grant No. 317144), which is gratefully acknowledged. The contributions of Jari-Pekka Nousiainen and Mika Aikio to the design of the PCB layout and the optics of the transmitter, respectively, are gratefully acknowledged.
Academy of Finland Grant Number: 317144
Detailed Information: 317144 (Academy of Finland Funding decision)
Copyright information: © The Authors. Published by SPIE under a Creative Commons Attribution 4.0 Unported License. Distribution or reproduction of this work in whole or in part requires full attribution of the original publication, including its DOI.