Wavefront sensing from spatial filtering at the focal plane

Details Wavefront sensing from spatial filtering at the focal plane Wavefront sensing from spatial filtering at the focal plane

Dec 2003

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2003spie.5169...43c&link_type=abstract

Astronomical Adaptive Optics Systems and Applications. Edited by Tyson, Robert K.; Lloyd-Hart, Michael. Proceedings of the SPI

Physics

Optics

1

Scientific paper

The pyramid wavefront sensor detects wavefront aberrations by subdividing the complex field at the origin of the focal plane into quadrants. This paper investigates wavefront sensors, such as the pyramid sensor, that subdivide the complex field at the origin of the focal plane into N equal segments. This can be physically realized with either an N-sided prism or by a lenslet array in the focal plane. An alternative reconstruction technique for the pyramid is also proposed to increase the performance of the sensor.

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