CAJ | 학술논문

提出了一种基于扫描式漫反射成像法测量激光强度时空分布的装置。测量装置主要由轮辐式扫描取样机构、同步信号发生器和CCD成像系统组成。装置使用动态的取样旋臂替代静态的漫反射屏，在保留漫反射成像法优点的前提下用取样的方式进行测量，具有测量分辨率高、取样衰减倍率较大、抗激光破坏能力强以及可在线测量等优点。与漫反射屏成像法的比对测量实验表明：两种测量方法的测量结果具有较高的一致性。扫描式漫反射成像法实现了对光斑的在线测量，可用于强激光辐照效应实验中激光强度分布的实时监测。
제출료일충기우소묘식만반사성상법측량격광강도시공분포적장치。측량장치주요유륜복식소묘취양궤구、동보신호발생기화CCD성상계통조성。장치사용동태적취양선비체대정태적만반사병，재보류만반사성상법우점적전제하용취양적방식진행측량，구유측량분변솔고、취양쇠감배솔교대、항격광파배능력강이급가재선측량등우점。여만반사병성상법적비대측량실험표명：량충측량방법적측량결과구유교고적일치성。소묘식만반사성상법실현료대광반적재선측량，가용우강격광복조효응실험중격광강도분포적실시감측。
A measurement system based on scanning diffuse reflection imaging was developed for space-time distribution of laser intensity. The measurement system mainly consisted of spoke-shaped sampling structure, synchronous signal generator and CCD imaging system. Instead of the traditional static diffuse reflecting screen, sampling was realized with several spoke-shape dynamic rotating arms, which was feasible for online measurement of laser intensity distribution. Besides high resolution of the traditional method, there were more advantages in this scanning diffuse reflection imaging method, e.g.high laser attenuation ratio, strong power against laser destruction, simple structure and better maneuverability. Comparative experiments with the diffuse reflecting screen imaging method demonstrate high correspondency between the two methods. This system can be applied in the real-time monitor of laser intensity distribution in laser irradiation effect experiments.