Linear phase retrieval for real-time adaptive optics

A. Polo; A. Haber; S. F. Pereira; M. Verhaegen; H. P. Urbach

doi:10.2971/jeos.2013.13070

Journal of the European Optical Society - Rapid publications, Vol 8 (2013)

Linear phase retrieval for real-time adaptive optics

A. Polo, A. Haber, S. F. Pereira, M. Verhaegen, H. P. Urbach

Abstract

We developed a fast phase retrieval algorithm that is suitable for real-time applications such as adaptive optics. The phase retrieval model is developed by linearising the pupil function in the approximation of small aberrations and is valid for low-NA focused field. The linear model in conjunction with a particular choice for the position of the single out-of-focus measurement plane and an efficient control algorithm, significantly reduces the computation time for phase retrieval. The experimental results demonstrate the validity of the described approach for fast correction of aberrations.

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