基于外触发的脉宽可调激光脉冲信号产生系统的研究设计

Research and Design of a Pulse Width Adjustable Laser Pulse Signal Generation System Based on External Trigger

摘要:

针对不同应用领域对激光脉冲宽度可调的需求,研究设计了一套基于外触发的脉宽可调纳秒级激光脉冲信号产生电路系统,该系统实现纳秒级脉冲信号脉宽可调、与外触发信号保持同步上升沿；介绍了系统中可控延时电路、脉冲信号重组电路、激光器功率控制和温度自动控制电路等主要硬件部分。重点对各电路进行集成与测试：系统产生纳秒级激光脉冲信号脉宽可调范围为0.25ns~63.75ns；在设置不同脉宽时,激光脉冲能量稳定性指标不超过0.92%。实验结果表明：该电路系统实现了纳秒级脉冲激光信号的脉宽精密可调、激光脉冲能量稳定性好,取得较好的预期效果。

Abstract:

To meet the demand for adjustable laser pulse width in different application fields, this paper designs a nanosecond pulse laser signal generation circuit system with adjustable pulse width based on external trigger. The paper introduces the main hardware components of the circuit system, including controllable delay circuit, pulse signal recombination circuit, laser power control and temperature automatic control circuit, and integrates and tests the circuit system. It generates nanosecond laser pulse signals with pulse width adjustable range of 0.25ns to 63.75ns. The root mean square (RMS) of laser energy is less than 0.92% when setting different pulse widths. The circuit system achieves the expected effect with precision adjustable nanosecond pulse width and excellent RMS performance of laser energy.