LiDAR systems for autonomous driving require fast pulse laser diodes (PLDs) with ever-improving resolution and range. For reliable 3D distance measurements based on the time-of-flight (ToF) principle, they must guarantee high pulse frequencies and have sophisticated control. This paper proposes a nanosecond-level pulse laser diode array drive circuit for LiDAR, primarily aimed at addressing the issue of high-speed scanning drive for the laser diode array at the emission end of solid-state LiDAR. This application note will introduce ROHM's LD line-up and show how to design the drive circuits of ROHM LDs. In addition, ROHM provides an evaluation board and a Spice model for evaluating LDs and will show how to use them and. LiDAR systems are important components used for environment perception in autonomous driving or robotics. The shape and distance of these objects can be determined via. A pulsed laser diode is useful in LiDAR because it emits short bursts of coherent light that can be launched toward a target, reflected back, and measured as a time delay. A triple-junction quantum well.
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