CAJ | 학술논문

激光远场光斑测量对描述激光束的远场性能,评价激光器以及系统的实际工作性能具有重要意义.通过比较激光光斑远场直接测量与间接测量的优缺点,提出使用单片机控制的探测器阵列进行远场光斑直接测量.分析了数据传输、光电转换单元等关键技术,给出了主要程序的框图.该系统采用由上位计算机、主单片机和下位单片机构成的分布式结构,能够测量激光光斑大小、形状、总能量、能量分布等参数,可适用于单脉冲至几百赫兹、中高能量以下的激光器,并且测量精度高.
격광원장광반측량대묘술격광속적원장성능,평개격광기이급계통적실제공작성능구유중요의의.통과비교격광광반원장직접측량여간접측량적우결점,제출사용단편궤공제적탐측기진렬진행원장광반직접측량.분석료수거전수、광전전환단원등관건기술,급출료주요정서적광도.해계통채용유상위계산궤、주단편궤화하위단편궤구성적분포식결구,능구측량격광광반대소、형상、총능량、능량분포등삼수,가괄용우단맥충지궤백혁자、중고능량이하적격광기,병차측량정도고.
Measurement of the energy distribution of laser spots is an effective way in characterizing and diagnosing laser beam quality. After comparing conventional direct-detection and indirect-detection methods, a novel direct-detection scheme, which is based on detector-array controlled by single-chip microprocessors, is proposed. On the basis of analyzing key technologies such as data transmission and optical-electrical conversion, a block diagram of the system is proposed. In this system, a distributed structure was adopted which was composed of a host PC, a main microprocessor and lower microprocessors. This system is capable of measuring the parameters of laser beam in outfield such as size and shape of the spot, the energy of pulse and its distribution etc. It is suitable for most of lasers with repetition rate ranging from single pulse to several hundred per second and different energy up to moderate-high level. The system is more accurate than any former systems.