Articles with "diffraction interferometer" as a keyword



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Concept validation of a high dynamic range point-diffraction interferometer for wavefront sensing in adaptive optics.

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Published in 2022 at "Applied optics"

DOI: 10.1364/ao.439569

Abstract: The direct detection and imaging of exoplanets requires the use of high-contrast adaptive optics (AO). In these systems quasi-static aberrations need to be highly corrected and calibrated. To achieve this, the pupil-modulated point-diffraction interferometer (m-PDI)… read more here.

Keywords: dynamic range; concept validation; point diffraction; adaptive optics ... See more keywords
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Point diffraction interferometer based on a silicon nitride waveguide spherical wave source.

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Published in 2022 at "Applied optics"

DOI: 10.1364/ao.461806

Abstract: A point diffraction interferometer based on silicon nitride waveguide (WG-PDI), adopting a silicon nitride waveguide spherical wave source (WG-SWS) with Si substrate and SiO2 cladding, is proposed for spherical surface testing. The WG-SWS is used… read more here.

Keywords: silicon nitride; point diffraction; spherical wave; diffraction interferometer ... See more keywords