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24 December 2003 Wavefront sensing from spatial filtering at the focal plane
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Abstract
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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Richard Michael Clare and Richard G Lane "Wavefront sensing from spatial filtering at the focal plane", Proc. SPIE 5169, Astronomical Adaptive Optics Systems and Applications, (24 December 2003); https://doi.org/10.1117/12.503543
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