Direct phase measurement in zonal wavefront reconstruction using multidither coherent optical adaptive technique

Rui Liu, Daniel E. Milkie, Aaron Kerlin, Bryan MacLennan, Na Ji

Research output: Contribution to journalArticlepeer-review

23 Scopus citations

Abstract

In traditional zonal wavefront sensing for adaptive optics, after local wavefront gradients are obtained, the entire wavefront can be calculated by assuming that the wavefront is a continuous surface. Such an approach will lead to sub-optimal performance in reconstructing wavefronts which are either discontinuous or undersampled by the zonal wavefront sensor. Here, we report a new method to reconstruct the wavefront by directly measuring local wavefront phases in parallel using multidither coherent optical adaptive technique. This method determines the relative phases of each pupil segment independently, and thus produces an accurate wavefront for even discontinuous wavefronts. We implemented this method in an adaptive optical two-photon fluorescence microscopy and demonstrated its superior performance in correcting large or discontinuous aberrations.

Original languageEnglish (US)
Pages (from-to)1619-1628
Number of pages10
JournalOptics Express
Volume22
Issue number2
DOIs
StatePublished - Jan 27 2014
Externally publishedYes

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