On the Characteristics of Pulsed Laser Driver Based on RLC Oscillation

Ze-an LI; Yu-bing WANG; Li QIN; Yong-qiang NING; Li-jun WANG

doi:10.37188/CJL.20200378

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On the Characteristics of Pulsed Laser Driver Based on RLC Oscillation

Device Fabrication and Physics | 更新时间：2021-04-23

- On the Characteristics of Pulsed Laser Driver Based on RLC Oscillation
- Chinese Journal of Luminescence Vol. 42, Issue 4, Pages: 510-517(2021)
- 作者机构：
  
  1.中国科学院长春光学精密机械与物理研究所发光学及应用国家重点实验室，吉林　长春　 130033
  2.中国科学院大学材料与光电研究中心，北京　 100049
  3.鹏城实验室，广东　深圳　 518055
- 作者简介：
- 基金信息：
  
  National Key R&D Program of China(2017YFB1104400);National Natural Science Foundation of China(61934003);Projects of Jilin Province Science and Technology Development Plan(20200501007GX;20200501008GX)
- DOI：10.37188/CJL.20200378
  CLC： TN952;TN248.4
- Published：01 April 2021，
  
  Received：10 December 2020，
  
  Revised：31 December 2020，
扫描看全文
Ze-an LI, Yu-bing WANG, Li QIN, et al. On the Characteristics of Pulsed Laser Driver Based on RLC Oscillation. [J]. Chinese Journal of Luminescence 42(4):510-517(2021)
DOI：

Ze-an LI, Yu-bing WANG, Li QIN, et al. On the Characteristics of Pulsed Laser Driver Based on RLC Oscillation. [J]. Chinese Journal of Luminescence 42(4):510-517(2021) DOI： 10.37188/CJL.20200378.

摘要

在飞行时间测距(TOF)的脉冲激光雷达(lidar)中，激光器驱动十分重要，其性能直接影响激光雷达系统的作用距离、信噪比和虚警率等指标，是激光雷达的关键组成部分。本文在目前常见的激光器驱动电路模型基础上进行创新，在储能电容的充电电路中引入适当电感，形成电阻电感电容(RLC)二阶微分振荡电路，可以大幅度提高脉冲激光器的驱动电压，从而提高驱动电流，驱动激光器产生大功率、窄脉宽的激光。经过理论计算、软件仿真和实验验证，引入适当的电感可以将脉冲激光器的驱动电流提高85%以上，输出功率提高114%以上。

Abstract

The laser driver circuit is very important in time-of-flight lidar. Its performance directly affects many key system parameters such as detection range

signal-to-noise ratio and false alarm rate. This article innovatively introduces appropriate inductance in charging circuit

forming resistance

inductance and capacitance(RLC) second-order differential oscillation circuit

which can greatly increase the driving voltage of the pulse laser and thereby increasing the driving current that drives the laser to produce high-power

narrow-pulsewidth laser. Theoretical calculations

numerical simulations and experimental verification show that driving current of pulse laser can be increased for over 85%

and the output power is increased for over 114% as an appropriate inductor is introduced into the system.

关键词

激光雷达大功率窄脉宽微分振荡电路

Keywords

lidarhigh powernarrow pulse widthdifferential oscillator circuit

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Related Institution

Center of Materials Science and Optoelectronics Engineering， University of Chinese Academy of Sciences

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