25 October 2004 Testing a nonmodulated pyramid wavefront sensor
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Proceedings Volume 5490, Advancements in Adaptive Optics; (2004); doi: 10.1117/12.551772
Event: SPIE Astronomical Telescopes + Instrumentation, 2004, Glasgow, United Kingdom
Abstract
The use of a pyramid wavefront sensor without any kind of modulating device, dynamical or statical, is a tempting idea that is being considered in the actual design of some wavefront sensing systems. However, such a system has not yet been fully studied, as for the effect of static non-common path aberrations, which in an extreme case would leave the system working in a saturated regime. Here we analyze the performance of a sensor, with and without modulation, working under these conditions, with two approaches: In laboratory experiments with a pyramid wavefront sensor system working in open- and closed compensation and through numerical simulations.
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Joana Buechler Costa, Micaela Stumpf, Markus Feldt, "Testing a nonmodulated pyramid wavefront sensor", Proc. SPIE 5490, Advancements in Adaptive Optics, (25 October 2004); doi: 10.1117/12.551772; https://doi.org/10.1117/12.551772
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KEYWORDS
Calibration

Modulation

Condition numbers

Mirrors

Wavefront sensors

Sensors

Adaptive optics

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