摘要
文中采用泰克高速采样示波器 TDS5000B和1 ns 响应时间的硅光电二极管对调 QDPL 的激光脉冲信号中出现的高频噪声信号进行了研究,表明其时域上的表现形式是高频毛刺信号,频域上则主要表现为1～2 GHz的噪声信号。在实验中分析并排除了探测系统本身的高频干扰,依据实验数据理论分析及仿真得出,高频毛刺产生的原因主要来自激光多纵模分布,仿真结果在实验中得到了很好的印证。
Tektronix high speed sampling oscilloscope TDS5000B and the 1 ns response-time PIN photodiode are used to research the high frequency noise which appears in the laser pulse signal.The research indicates that the form in time domain is the high frequency burr signal,and mainly the 1～2 GHz noise signal in frequency spectrum. In the research,the high frequency interference of the detection system is removed.According to the experimental data,theoretical analysis and simulation,the high frequency burr is mainly produced from the laser multi-longitudinal mode distribution,and good verifying is obtained.
出处
《红外与激光工程》
EI
CSCD
北大核心
2006年第z3期148-153,共6页
Infrared and Laser Engineering
基金
国家重点实验室基金项目(51438010205DZ0101)
关键词
激光脉冲
高频噪声信号
高速采样示波器
信号检测
多纵模分布
Laser pulse
High frequency noise
High speed sampling oscilloscope
Signal detect
Laser multi-longitudinal mode distribution
