Determination of wavefront structure for a Hartmann wavefront sensor using a phase-retrieval method.

@article{Polo2012DeterminationOW,
  title={Determination of wavefront structure for a Hartmann wavefront sensor using a phase-retrieval method.},
  author={Alessandro Polo and V Kutchoukov and Florian Bociort and S C F Pereira and H. P. Urbach},
  journal={Optics express},
  year={2012},
  volume={20 7},
  pages={
          7822-32
        }
}
We apply a phase retrieval algorithm to the intensity pattern of a Hartmann wavefront sensor to measure with enhanced accuracy the phase structure of a Hartmann hole array. It is shown that the rms wavefront error achieved by phase reconstruction is one order of magnitude smaller than the one obtained from a typical centroid algorithm. Experimental results are consistent with a phase measurement performed independently using a Shack-Hartmann wavefront sensor. 
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