The nanosecond high-power laser emission system has an important impact on the detection performance of LIDAR.In this paper,the commonly used low-side gate drive is modified to obtain a high-side gate drive method,mak-ing it suitable for common cathode laser emission circuits.And the high-side drive method utilizes a half-bridge driver with two GaNFETs as core devices to control the light emission of the laser diode.The effects of voltage,capacitance,resistance,and inductance on the current waveform flowing through the laser are analyzed in this topology.After exper-imental testing,the circuit is capable of generating a pulse width of 3.1 ns and a peak power of approximately 65 W at high repetition rates,which can be used as a transmitter module for LIDAR to scan and image scenes.
关键词
纳秒级/高功率/激光发射/高侧栅极驱动/共阴极/高重复率
Key words
nanosecond level/high power/laser emission/high side gate drive/common cathode/high repetition rate
维普
万方数据