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Diffractive simultaneous bidirectional shearing interferometry using tailored spatially coherent light

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Nercissian,  Vanusch
Optical Design and Microoptics, Leuchs Division, Max Planck Institute for the Science of Light, Max Planck Society;

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Harder,  Irina
Optical Design and Microoptics, Leuchs Division, Max Planck Institute for the Science of Light, Max Planck Society;

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Mantel,  Klaus
Optical Design and Microoptics, Leuchs Division, Max Planck Institute for the Science of Light, Max Planck Society;

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Leuchs,  Gerd
Leuchs Division, Max Planck Institute for the Science of Light, Max Planck Society;

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Lindlein,  Norbert
Optical Design and Microoptics, Leuchs Division, Max Planck Institute for the Science of Light, Max Planck Society;

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Schwider,  Johannes
Optical Design and Microoptics, Leuchs Division, Max Planck Institute for the Science of Light, Max Planck Society;

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Citation

Nercissian, V., Harder, I., Mantel, K., Berger, A., Leuchs, G., Lindlein, N., et al. (2011). Diffractive simultaneous bidirectional shearing interferometry using tailored spatially coherent light. APPLIED OPTICS, 50(4), 571-578. doi:10.1364/AO.50.000571.


Cite as: http://hdl.handle.net/11858/00-001M-0000-002D-6A2B-4
Abstract
Measurements of wavefront deformations can be carried out with the help of lateral shearing interferometers. Here the focus is on a setup providing two shears along orthogonal directions simultaneously to generate the data needed for a reconstruction. We describe a diffractive solution using Ronchi phase gratings with a suppressed zeroth order for both the doubling of the wavefront under test and the bidirectional shearing unit. A series arrangement of the gratings offers an on-axis geometry, which minimizes the systematic errors of the test. For illumination, an extended incoherent monochromatic light source is used. High-contrast fringes can be obtained by tailoring the degree of coherence via a periodic intensity distribution. (c) 2011 Optical Society of America