Attenuation of high rate in parameter measurement of high power laser

Chen Xin; Tang Shunxing; Guo Yajing; Jing Yuanyuan; Jiang Xiuqing; Zhu Baoqiang

doi:10.3788/IRLA201645.S106002

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 45.5m, or 3.54 times of diffraction limitation.

Attenuation of high rate in parameter measurement of high power laser

1. National Laboratory on High Power Laser and Physics,Shanghai Institute of Optics and Fine Mechanics,Chinese Academy of Sciences,Shanghai 201800,China;

2. University of Chinese Academy of Sciences,Beijing 100049,China

Received Date: 2015-08-05

Rev Recd Date: 2015-09-03

Publish Date: 2016-05-25

Key words:

Abstract: 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 45.5m, or 3.54 times of diffraction limitation.

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Attenuation of high rate in parameter measurement of high power laser

doi: 10.3788/IRLA201645.S106002

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