Sergey Vainshtein, Guoyong Duan, Timo Rahkonen, Zachary Taylor, Valery Zemlyakov, Vladimir Egorkin, Olga Smolyanskaya, Thomas Skotnicki, Wojciech Knap, Self-damping of the relaxation oscillations in miniature pulsed transmitter for sub-nanosecond-precision, long-distance LIDAR, Results in Physics, Volume 19, 2020, 103509, ISSN 2211-3797, https://doi.org/10.1016/j.rinp.2020.103509
Self-damping of the relaxation oscillations in miniature pulsed transmitter for sub-nanosecond-precision, long-distance LIDAR
|Author:||Vainshtein, Sergey1,2; Duan, Guoyong2; Rahkonen, Timo2;|
1CENTERA Laboratories, Institute of High Pressure Physics PAS, ul. Sokołowska 29/37, 01-142 Warsaw, Poland
2CAS Group, University of Oulu, P.O. Box 4500, FIN-90014 Oulu, Finland
3Aalto University, Department of Electronics and Nanoengineering, MilliLab, Maarintie 8, Espoo 02150, Finland
4National Research University of Electronic Technology – MIET, Bld. 1, Shokin Square, Zelenograd, Moscow 124498, Russia
5Institute of Photonics and Optical Information Technologies, ITMO University, Kronverkskiy 49, 197101 Saint-Petersburg, Russia
6CEZAMAT and IMiO, Warsaw University of Technology, Pl. Politechniki 1, 00-661 Warsaw, Poland
|Online Access:||PDF Full Text (PDF, 2.6 MB)|
|Persistent link:|| http://urn.fi/urn:nbn:fi-fe20201211100349
|Publish Date:|| 2020-12-11
Peak power is a critical factor for sub-nanosecond-pulsed transmitters utilizing laser diodes (LD) and applied to long distance LIDARs (light detection and ranging) for drones and automotive applications. Receiver speed is not anymore a limiting factor thanks to replacing linear (typically avalanche) detectors and a broad-band amplifier with a single photon avalanche detector (SPAD). Consequently the transmitters become the bottle neck in the resolution and ranging. The simplest and lowest-possible-cost transmitter consists of a switch, an LD, a storage capacitor C, and unavoidable parasitic loop inductance L. In the resulting resonant circuit, the principal problem consists of suppressing relaxation oscillations. Traditional way of oscillation damping reduce peak current and increase the pulse width. Here we show that specific transient properties of a Si avalanche switch solves the problem automatically provided the inductance is sufficiently low. This finding advances the state-of-the-art by reaching 90 W/1ns/200 kHz pulses from a miniature low-cost transmitter based on Si avalanching bipolar junction transistor (ABJT). Besides, the same self-damping effect may be realized in other switches maintaining significant residual voltage despite of fast current reduction.
Results in physics
|Type of Publication:||
A1 Journal article – refereed
|Field of Science:||
213 Electronic, automation and communications engineering, electronics
114 Physical sciences
S.V., T.S. and W.K. were supported by CENTERA project carried out within the IRAP program of the Foundation for Polish Science (grant MAB/2018/9) co-financed from the EU European Regional Development Fund. S.V. is also grateful to MNTC of University of Oulu for valuable engineering support. G.D. was supported by Finnish Academy, project number 310152. O.S was supported by Russian Foundation for Basic Research and The French National Centre for Scientific Research (RFBR and CNRS) (18-51-16002), and also by Government of the Russian Federation (08-08).
© 2020 The Authors. Published by Elsevier B.V. ublished by Elsevier B.V. This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/).