Wave front sensor-less adaptive optics: a model-based approach using sphere packings
نویسندگان
چکیده
منابع مشابه
Wave front sensor-less adaptive optics: a model-based approach using sphere packings.
Certain adaptive optics systems do not employ a wave front sensor but rather maximise a photodetector signal by appropriate control of an adaptive element. The maximisation procedure must be optimised if the system is to work efficiently. Such optimisation is often implemented empirically, but further insight can be obtained by using an appropriate mathematical model. In many practical systems ...
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The Pyramidic wavefront has a very interesting property: its SNR has a significant increase once the loop is closed, similarly to the Curvature Sensor and contrasting with the Shack-Hartmann one. This result in a gain comparing the Pyramidic and the Shack-Hartmann sensors. It is shown by a combination of descriptive and numerical arguments that this gain is of the order of (D/r0) for low order ...
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ژورنال
عنوان ژورنال: Optics Express
سال: 2006
ISSN: 1094-4087
DOI: 10.1364/oe.14.001339