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Influences of Analog-to-Digital Conversion Accuracy and Response Uniformity of CCD on Small-Scale Laser Focal Spot Measurements

  • Xiaoyan Liu
  • , Dexin Ba
  • , Deqiang Jiao
  • , Xiangxin Shao
  • , Xin Mu
  • , Ying Wang
  • Changchun University of Technology
  • Harbin Institute of Technology

Research output: Contribution to journalArticlepeer-review

3 Scopus citations

Abstract

The two-dimensional snake scanning of the CCD method provides an effective solution to measure small-scale light spots which are smaller than one CCD pixel. The influences of the A/D conversion digits and response uniformity of the CCD on the measurement error are studied. When the A/D conversion digit is 20, the measurement error can be ignored. The maximum error value of the nonuniform response of the CCD pixel when the order of the super-Gaussian function is 10 is 0.7 μm. The research results can be used to guide the experiment.

Original languageEnglish
Article number6664228
JournalLaser and Particle Beams
Volume2021
DOIs
StatePublished - 2021
Externally publishedYes

Bibliographical note

Publisher Copyright:
© 2021 Xiaoyan Liu et al.

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