摘要
为实现激光导引头高精度光电参数测量,提出了一种基于雪崩光电二极管(APD)雪崩放大效应的微弱信号放大技术以及基于现场可编程逻辑门阵列(FPGA)的全波形采集技术,研制了一套飞焦量级激光模拟回波光电参数定量化测量装置。测量装置针对微弱脉冲激光回波进行光电转换及多级放大处理,之后通过高速A/D实现模数转换,并由FPGA进行全波形信号的存储、处理,再传递到上位机上,最后使用标准能量计搭建计量校准光路进行测量装置的能量校准。测量装置实现了脉冲宽度10~100 ns、能量范围40 fJ~1.1 pJ的1064 nm波段的脉冲激光能量的测量,测量重复性不高于2%,基本满足测试需求。
In order to achieve high-precision photoelectric parameter measurement of laser seeker,a weak signal amplification technology based on avalanche photodiode(APD)avalanche amplification effect and a full waveform acquisition technology based on field programmable gate array(FPGA)are proposed.The measuring device performs photoelectric conversion and multistage amplification for weak pulse laser echo,and then realizes analog-to-digital conversion through high-speed AD,and the FPGA stores and processes the full waveform signal,which is then transferred to the upper computer.Finally,the standard energy meter is used to build a metering calibration optical path to calibrate the energy of the measuring device.The measuring device realizes the measurement of 1064 nm pulsed laser energy with pulse width of 10~100 ns and energy range of 40 fJ~1.1 pJ.The measurement repeatability is not more than 2%,which basically meets the test requirements.
作者
邓培
杜继东
王加朋
李世伟
周志刚
DENG Pei;DU Ji-dong;WANG Jia-peng;LI Shi-wei;ZHOU Zhi-gang(Beijing Institute of Metrology and Testing,Beijing 100074,China)
出处
《光学与光电技术》
2022年第6期125-132,共8页
Optics & Optoelectronic Technology
关键词
激光回波
飞焦
微弱信号检测
脉冲激光
校准
laser echo
femto Joule
weak signal detection
pulse laser
calibration
作者简介
邓培(1993—),男,硕士,主要从事激光计量测试技术方面的研究工作。
