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,建立了热释电探测器对单脉冲激光辐照响应的工作模型,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。设计了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。 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 for single-pulse laser irradiation was established. The main factors affecting the frequency characteristics of the detector. The response model in practical application is calculated according to the material and structural parameters. Signal detection circuit is designed and calculated. The experimental measurements such as the frequency response and the pulse width response of the detector were completed, which verified the feasibility of the pyrolytic detector for energy measurement of high repetition rate and narrow pulse laser.