Study on parameter measurement precision of high energy laser beam with large aperture
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1.
Southwest Institute of Technical Physics, Chengdu 610041, China;
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2.
Electronic Engineering and Optoelectronic Technology, Nanjing University of Science and Technology, Nanjing 210094, China;
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3.
School of Optoelectronics, Beijing Institute of Technology, Beijing 100081, China
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Received Date:
2014-01-09
Accepted Date:
2014-01-26
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Abstract
In order to study the field characteristics of high energy laser, a device for measuring parameters of large-caliber high energy pulsed laser was developed. The device includes a set of autocalibration system that can conduct on-site calibration of its main coefficients. The measuring principle, performance and structure of the device were described, and the measurement error was analyzed by theoretical analysis and experimental verification. The equipment can simultaneously measure the laser energy and intensity distribution. Finally, measurement errors were verified and analyzed by the method of calibration experiments. Measurement errors of laser energy and intensity distribution are 4.5% and 5% respectively. The results show that the equipment has excellent precision,reliability and stability, which could be used in field measurement.
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