Applied Physics B

, Volume 98, Issue 2, pp 465–469

Hartmann phase pick-up method for detection and correction of piston aberrations in a multi-beam coherent combination system

Article

DOI: 10.1007/s00340-009-3643-4

Cite this article as:
Yang, P., Yang, R., Dong, L. et al. Appl. Phys. B (2010) 98: 465. doi:10.1007/s00340-009-3643-4

Abstract

In multi-beam coherent combination laser systems, piston aberration between each sub-beam is often regarded as the dominative factor to deteriorate the combination performance. So as to obtain a favorable combination result, a Hartmann phase pick-up method in combination with a seven-element active segmented mirror is presented to pick up and correct the piston aberrations of a seven-beam coherent combination system. A simulative result indicates that the RMS value of the wavefront can be reduced from 401 nm to 3.7 nm, while the far-field Strehl ratio can be increased from 0.22 to 0.99 after correction.

PACS

02.60.Cb 42.60.Jf 42.60.By 

Copyright information

© Springer-Verlag 2009

Authors and Affiliations

  • P. Yang
    • 1
    • 2
  • R. Yang
    • 1
    • 2
    • 3
  • L. Dong
    • 1
    • 2
    • 3
  • X. Lei
    • 1
    • 2
    • 3
  • B. Xu
    • 1
    • 2
  1. 1.The Key Laboratory on Adaptive OpticsChinese Academy of SciencesChengduChina
  2. 2.Institute of Optics and ElectronicsChinese Academy of SciencesChengduChina
  3. 3.Graduate School of Chinese Academy of SciencesBeijingChina