论文部分内容阅读
以热释电探测器的工作原理为基础,研究了热释电探测器对重频脉冲激光的瞬态响应特性,建立热释电探测器单脉冲激光辐照的工作模型,分析了影响探测器频率特性的主要因素,根据材料和结构参数模拟计算了实际应用中的响应模型,重点研究了电时间常数和热时间常数对测量的影响。设计了能够提高探测器响应速度的信号检测电路并对其进行计算仿真。完成了探测器的频率响应、脉宽响应等实验测量,验证了热释电探测器用于高重频、窄脉冲激光能量测量的可行性,并给出了目前探测单元的测量范围、线性动态范围及不确定度等指标。
Based on the working principle of pyroelectric detector, the transient response of pyroelectric detector to repetitive-frequency pulsed laser was studied. The working model of pyroelectric detector was established by single-pulse laser irradiation. The influence of detector Frequency characteristics of the main factors, according to the material and structure parameters simulation of the practical application of the response model, focusing on the study of the electrical time constant and thermal time constant on the measurement. The signal detection circuit which can improve the detector response speed is designed and simulated. The experimental measurements such as frequency response and pulse width response of the detector were completed. The feasibility of pyroelectric detector for energy measurement of high repetition rate and narrow pulse laser was verified. The measurement range, linear dynamic range And uncertainty and other indicators.