Digital refraction distortion correction with an astigmatic coherence sensor.

Journal Article (Journal Article)

We demonstrate the sensing and correction of an isoplanatic refractive distortion (not lens aberrations), using the complete measurement of the partially coherent field in an aperture that the previously described astigmatic coherence sensor provides. Isoplanatic distortions, and in general distortions that do not cause energy loss, maintain the orthogonality of the coherent modes. We use the fact that a common distortion will occur to all coherent modes to separate the distortion from the source behind it, rather than requiring a reference source at a different wavelength. Digital deconvolution was performed on the full four-dimensional partially coherent field for simultaneously computing the distortion and the source intensity distribution.

Full Text

Duke Authors

Cited Authors

  • Marks, DL; Stack, RA; Brady, DJ

Published Date

  • October 2002

Published In

Volume / Issue

  • 41 / 29

Start / End Page

  • 6050 - 6054

PubMed ID

  • 12389973

Pubmed Central ID

  • 12389973

Electronic International Standard Serial Number (EISSN)

  • 1539-4522

International Standard Serial Number (ISSN)

  • 1559-128X

Digital Object Identifier (DOI)

  • 10.1364/ao.41.006050


  • eng