We show in particular that the number of faces has influence on the number of pixels required to do the wave front sensing but no influence on the sensitivity and linearity range. To modify these criteria, we show that the modulation radius and the apex angle are much more relevant. Moreover we observe that the time spent on edges or faces during a modulation cycle allows to adjust the trade-off between sensitivity and linearity range.
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Olivier Fauvarque, Benoit Neichel, Thierry Fusco, Jean-Francois Sauvage, Orion Giraut, "A general formalism for Fourier based wave front sensing: application to the Pyramid wave front sensors," Proc. SPIE 9909, Adaptive Optics Systems V, 990960 (27 July 2016);