Journal ArticleDOI
Variations on a Hartmann theme
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TLDR
In this article, the authors explore modifications of the classical Hartmann wavefront sensing technique that can be used to improve its accuracy, dynamic range, and spatial resolution, and describe a differential sensor with variable sensitivity.Abstract:
We explore modifications of the classical Hartmann wavefront sensing technique that can be used to improve its accuracy, dynamic range, and spatial resolution. We describe a differential sensor with variable sensitivity. We review the use of various possible Hartmann masks and discuss their interferometric properties. We propose the use of Fourier analysis and show its relationship to moire methods. We finally envisage the possibility of mapping both the slope and the total curvature (Laplacian) of the wavefront with the same setup.read more
Citations
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Journal ArticleDOI
Extended Hartmann test based on the pseudoguiding property of a Hartmann mask completed by a phase chessboard
Jérôme Primot,Nicolas Guérineau +1 more
TL;DR: A pseudoguiding of the energy issuing from this mask, allowing for an increase in the sensitivity of the Hartmann test is obtained, and a comparison between classical and new Hartmanngrams is presented.
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Achromatic three-wave (or more) lateral shearing interferometer
Jérôme Primot,L. Sogno +1 more
TL;DR: In this article, a new achromatic setup adapted to low light level applications is presented, where three replicas of the analyzed wave front are obtained by Fourier filtering of the orders diffracted by a microlens array.
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Theoretical description of Shack–Hartmann wave-front sensor
TL;DR: In this paper, a complete model of a Shack-Hartmann wave-front sensor, seen as a grating interferometer, is proposed and a new technique for extracting the phase derivative is also proposed.
Journal ArticleDOI
Wave-front reconstruction from multidirectional phase derivatives generated by multilateral shearing interferometers
TL;DR: This work proposes to exploit the natural capability of multiple lateral shearing interferometers to measure simultaneously more than two orthogonal phase derivatives and describes a method, based on Fourier-transform analysis, that uses this multiple information to reconstruct the wave-front under study.
Journal ArticleDOI
Three-wave lateral shearing interferometer
TL;DR: The three-wave lateral shearing interferometer is an interferometers specially designed for optical testing that determines three noncollinear phase gradients from one single-fringe pattern and can be easily adjusted to the analyzed aberrations.