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). https://doi.org/10.1117/1.OE.60.5.054105
Solid-state block-based pulsed laser illuminator for single-photon avalanche diode detection-based time-of-flight 3D range imaging
|Author:||Jahromi, Sahba S.1; Jansson, Jussi-Pekka1; Keränen, Pekka1;|
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
|Online Access:||PDF Full Text (PDF, 1.9 MB)|
|Persistent link:|| http://urn.fi/urn:nbn:fi-fe2021081343204
|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.
|Type of Publication:||
A1 Journal article – refereed
|Field of Science:||
213 Electronic, automation and communications engineering, electronics
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 (Academy of Finland Funding decision)
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