光学与光电技术, 2018, 16 (1): 21, 网络出版: 2018-03-21   

激光能量快速扫描测量系统的FPGA实现

FPGA Implementation of Laser Energy Rapid Scanning Measurement System
作者单位
四川大学电子信息学院, 四川 成都 610064
摘要
激光脉冲加工过程中,激光光场的能量分布是确保激光加工成型质量的重要参数,对激光光场的能量扫描测量是一个必不可少的重要环节。设计了一种用现场可编程逻辑门阵列FPGA实现激光能量快速扫描测量系统。该系统在扫描过程中,通过高精度计量光栅获取指定能量测量位置信息,并同步控制能量计实时采集能量,实现激光光场能量的不间断连续快速扫描。扫描位置和激光脉冲数均可智能预置。通过对连续光场能量扫描测量实验,证明了所设计快速扫描测量系统的可行性和实用性。
Abstract
In the process of pulse laser machining, the energy distribution of laser light field is an important parameter to ensure the laser machining quality. So energy scanning measurement of laser light field is a necessary and important link. In this paper, a fast scanning energy measurement system for laser light field is developed based on field programmable gate array (FPGA). In the scanning process of the system, the position information of the specified energy is obtained by a high-precision metrological grating. The energy meter is synchronously controlled to sample the energy in real time at this position, so that the energy of the laser field can be continuously scanned continuously. Both the scanning position and the number of laser pulses can be intelligently preset. The feasibility and practicability of the designed fast scanning measurement system have been proved by the experimental results of energy continuous scanning for laser light field.

李春晶, 曹益平, 蔡文娟, 李琴. 激光能量快速扫描测量系统的FPGA实现[J]. 光学与光电技术, 2018, 16(1): 21. LI Chun-jing, CAO Yi-ping, CAI Wen-juan, LI Qin. FPGA Implementation of Laser Energy Rapid Scanning Measurement System[J]. OPTICS & OPTOELECTRONIC TECHNOLOGY, 2018, 16(1): 21.

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