Quaternary adaptive optics

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URI: https://hdl.handle.net/10902/28943
ISSN: 1094-4087
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Autoría
Pérez Cagigal, ManuelAutoridad Unican; Fuentes Ruiz, Antonio; Cagigas, Miguel Ángel; Valle Herrero, Pedro JoséAutoridad Unican; Prieto Blanco, Xesús; Fernández Canales, VidalAutoridad Unican
Fecha
2019-08
Derechos
© 2019 Optical Society of America under the terms of the OSA Open Access Publishing Agreement
Publicado en
Optics Express, 2019, 27(17), 24524-24537
Editorial
The Optical Society (OSA)
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Resumen/Abstract
We present a new Point Diffraction Interferometer (PDI). Binary adaptive optics (BAO) and Quaternary Adaptive Optics (QAO) can be performed with the help of this PDI as a wavefront sensor. The PDI interferogram, once binarized, is used in two consecutive steps to produce a quaternary mask with phase values 0, π/2, π and 3π/2. The addition of the quaternary mask compensates for the aberrated wavefront and allows us to reach a Strehl ratio of about 0.81. We have verified through computer simulations that the use of QAO depends on the number of actuators of the compensating device to achieve effective compensation. The technique was successfully validated through an experiment.
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