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- W2053912199 abstract "ABSTRACT A scintillation-resistant sensor that allows retrieval of an input optical wave phase using a multi-a perture phase reconstruction (MAPR) technique is introduced and analyzed. The MAPR sensor is based on a low-resolution lenslet array in the classical Shack-Hartmann a rrangement and two high-resolution photo-arrays for simultaneous measurements of pupil- and focal-plane intensity distributions which are used for retrieval of wavefront phase in a two stage process: (a) phase reconstruction inside the sensor pupil sub-regions corresponding to lenslet sub-apertures, and (b) recovery of sub-aperture averaged phase components (piston phases). Numerical simulations demonstrate the efficiency of the MAPR technique in conditions of strong intensity sc intillations and presence of wavefront branch points. Keywords: Wavefront sensing, phase reconstruction, atmosphe ric turbulence, adaptive optics, intensity scintillation 1. INTRODUCTION Propagation of optical waves through a medium with random refractive index inhomogeneities such as the Earth atmosphere may result in strong spatial and temporal fluctuations of wavefront phase and intensity distributions commonly referred to as phase aberrations and intensity scintillations, respectively" @default.
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- W2053912199 date "2012-02-01" @default.
- W2053912199 modified "2023-10-03" @default.
- W2053912199 title "Scintillation-resistant wavefront sensing based on a multi-aperture phase reconstruction (MAPR) technique" @default.
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- W2053912199 doi "https://doi.org/10.1117/12.906080" @default.
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