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A Study on Stability Improvement of High Energy Laser Beam Wavefront Correction System

  • Journal of The Korea Society of Computer and Information
  • Abbr : JKSCI
  • 2018, 23(2), pp.1-7
  • DOI : 10.9708/jksci.2018.23.02.001
  • Publisher : The Korean Society Of Computer And Information
  • Research Area : Engineering > Computer Science
  • Received : November 28, 2017
  • Accepted : February 12, 2018
  • Published : February 28, 2018

JongKyu Jung 1 Sooman Lee 1

1한화 디펜스

Accredited

ABSTRACT

The adaptive optics for compensating for optical wavefront distortion due to atmospheric turbulence has recently been used in systems that improve beam quality by eliminating the aberrations of high power laser beam wavefront. However, unseen-mode, which can not be measured in the wavefront sensor, increases the instability of the laser beam wavefront compensator on the adaptive optics system. As a method for improving such instability, a mathematical method for limiting the number of singular values is used when generating the command matrix involved in generation of the drive command of the wavefront compensator. In the past, however, we have relied solely on experimental methods to determine the limiting range of the singular values. In this paper, we propose a criterion for determining the limiting range of the singular values using the driving characteristics and the correlation technique of the wavefront compensator's actuators and have proved its performance experimentally.

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