Collection Of theses on high power laser and plasma physics, 2015, 13 (1): 0402001, Published Online: May. 26, 2017
Analysis of Influence of CCD′s Nonlinear Photoelectric Characterization on Evaluating the High Power Laser Beam Quality
激光器 光束质量 电荷耦合器件 单缝衍射 非线性特性 近远场 灰度修复 lasers beam quality charge coupled device (CCD) single slit diffraction nonlinear characterization near-field and far-field grey level restoration
Abstract
Influence of charge coupled device (CCD)′ s nonlinear response characteristics on the near-field and far-field beam quality′ s measurement of high power laser system is analyzed. A new calibration method, based on single slit diffraction, is presented to calibrate CCD′ s photoelectric characteristics. Accomplish the calibration of a given CCD and restore the grey level of near-field and far-field energy distribution by the calibration curve in ideal and practical system to observe the influence on the measurement of near-field fill factor (FF) and far-field encircled energy distribution. The restoration shows that in a certain laser system the near-field FF will improve 1% ~2% after the grey level restoration. And it has nearly no influence on the farfield energy distribution parameters.
Liu Yaqun, Tang Shunxing, Guo Yajing, Cui Zijian, Jiang Xiuqing, Zhu Baoqiang. Analysis of Influence of CCD′s Nonlinear Photoelectric Characterization on Evaluating the High Power Laser Beam Quality[J]. Collection Of theses on high power laser and plasma physics, 2015, 13(1): 0402001.
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