调Q DPL输出脉冲高频噪声研究  

High frequency noise in output pulse of Q-switched laser

作　　者：王欣媛[1] 王石语[1] 李兵斌[1] 蔡德芳[1] 文建国[1] 过振[1] 

机构地区：[1]西安电子科技大学技术物理学院,陕西西安710071

出　　处：《红外与激光工程》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)

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.

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 

分 类 号：TN248[电子电信—物理电子学]