CAJ | 학술논문

现有激光光束质量的测量方法无法同时兼顾测量速度与测量精度。为了达到兼顾速度与精度的目的，提出了双狭缝扫描法。此方法不需要在光路中使用衰减器，从而降低了数据分析复杂度。选用嵌入式技术完成对整个系统的控制与数据处理，便于携带，可实现对数据的实时处理；同时进行了理论分析和实验验证。结果表明，该方法可实现快速同步测量两轴的功率分布，动态范围可达到70dB，扫描频率为2Hz～18Hz，可用于分析连续或脉冲激光光束。该方法对兼顾测量速度与精度是有帮助的。
현유격광광속질량적측량방법무법동시겸고측량속도여측량정도。위료체도겸고속도여정도적목적，제출료쌍협봉소묘법。차방법불수요재광로중사용쇠감기，종이강저료수거분석복잡도。선용감입식기술완성대정개계통적공제여수거처리，편우휴대，가실현대수거적실시처리；동시진행료이론분석화실험험증。결과표명，해방법가실현쾌속동보측량량축적공솔분포，동태범위가체도70dB，소묘빈솔위2Hz～18Hz，가용우분석련속혹맥충격광광속。해방법대겸고측량속도여정도시유방조적。
Available measurement methods of laser beam quality can ’ t reach the demands of speed and accuracy simultaneously .In order to take speed and precision into account , a double-slit scanning method was proposed .The complexity of data analysis reduced because attenuator was not used in the optical path .Embedded technology was selected to control and process the data , and real time data processing can be realized while the whole system was easy to carry .After theoretical analysis and experimental verification , the results show that this method can get fast synchronous measurement of dual axis shaft power distribution.Dynamic range can reach 70dB and scan rate is from 2Hz to 18Hz.This method can be used for the analysis of continuous or pulsed laser beam and is helpful for reaching the demands of both measurement speed and accuracy .