1. Forschung
  2. Publikationen
  3. High pulse power wavelength st ...

Publikationen

Wissenschaftliche Beiträge

 zu Konferenzen finden Sie übrigens auch bei den Terminen.

High pulse power wavelength stabilized 905 nm laser bars for automotive LiDAR

H. Wenzel, A. Klehr, A. Liero, H. Christopher, J. Fricke, A. Maaßdorf, A. Zeghuzi, and A. Knigge

Published in:

IEEE High Power Diode Lasers and Systems Conference (HPD 2019), Coventry, UK, Oct. 9-10, pp. 7-8, ISBN: 978-1-7281-3097-2 (2019).

Abstract:

Key components of LiDAR (Light Detection and Ranging) systems, e.g., for autonomous driving and robotics are diode lasers capable of generating nanoseconds-long optical pulses with peak powers of 100 W and more. We present here an internally wavelength stabilized distributed Bragg reflector (DBR) broad area (BA) laser bar with 48 emitters electrically driven by a new in-house developed high-speed driver based on GaN transistors providing electrical pulses with peak currents of up to 1000 A and a repitition frequency of 10 kHz. The generated 4 ns to 10 ns long optical pulses are nearly rectangular shaped and reach a pulse peak power in excess of 600 Watts at 25°C. The optical spectrum of a single emitter with a center wavelength of about 900 nm has a width of 0.6 nm with a side mode suppression ratio >30 dB.

Ferdinand-Braun-Institut, Leibniz-Institut für Höchstfrequenztechnik, Gustav-Kirchhoff-Str. 4, 12489 Berlin, Germany

Index Terms:

Bragg gratings, diode lasers, electronic circuits, laser radar, pulse generation, quantum well lasers.

Copyright © 2019 IEEE - All rights reserved. Personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution to servers or lists, or to reuse any copyrighted component of this work in other works must be obtained from the IEEE.

Full version in pdf-format.