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Pyramid wavefront sensor Optical Gains compensation using a convolutional model

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Academic year: 2021

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Figure

Fig. 1. The PyWFS is a Fourier filtering wavefront sensor. A pyramidal mask is placed at a focal plane in order to achieve optical filtering
Fig. 2. a: arg(m) - shape of the pyramid mask. b: w - modulation func- func-tion. c: I p - pupil shape.
Fig. 3. Sketch of the PyWFS response curve for a given mode φ i . The push-pull method around a null-phase consists in computing the slope of this curve for a = 0.
Fig. 4. The well-known pyramid sensitivity curves. Left: Modulation radius r mod = 2λ/D
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