中文题目: 高功率激光参数测量中高倍率衰减方案
外文题目: Attenuation of high rate in parameter measurement of high power laser
作者: 陈欣;唐顺兴;郭亚晶;井媛媛;姜秀青;朱宝强;
刊名: 红外与激光工程
年: 2016 卷: 45 期: S1 页： 55--61
中文关键词:
高功率激光;;远场测量;;楔板;;衰减
中文摘要:
在高功率激光参数测量中,高倍率衰减方案设计是空间分布测量的关键。分析了远场测量光学系统,将95%环围能量直径作为评价远场测量系统的重要指标,明确了高倍率衰减对远场测量结果的影响,确立了高倍率衰减方案的设计原则。利用Virtual Lab软件,针对单个平板、成对平板、成对楔板三种常见的高倍率衰减方案,分析了衰减片摆放角度、位置、厚度、成对衰减片间距等因素对于远场测量系统的影响。针对焦距3 000 mm,F数为10的缩束系统,考虑杂散光对于远场测量的影响,优化得出最佳高倍率衰减方案。该方案下,远场像面处95%

英文摘要:
In high power laser beam parameters measurement, attenuation scheme with high rate is key to far-field measurement. The far-field optical measurement system was analyzed and diameter of 95% encircled energy was used as important evaluation criterion of far-field measurement system. Measurement error of far-field optical measurement system and effect of attenuation with high rate on far-field measurement results were analyzed. Principle of attenuation scheme with high rate was established. By changing parameters of high attenuation rate in condition of single parallel plate, a pair of parallel plates and a pair of wedge flaps by Virtual Lab, influence of attenuation on the far-field measurement system was simulated and analyzed deeply. According to measurement system for f =3 000 mm and F =10, best attenuation scheme with high rate is designed. Diameter of 95% encircled energy of far-field image is 45.5 μm, or 3.54 times of diffraction limitation. ? 2016, Editorial Board of Journal of Infrared and Laser Engineering. All right reserved.


文献类型: 期刊论文
正文语种: chinese
收录类别: EI
DOI: 10.3788/IRLA201645.S106002


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