Accuracy of correction in modal sensorless adaptive optics.

Abstract : We investigate theoretically and experimentally the parameters governing the accuracy of correction in modal sensorless adaptive optics for microscopy. On the example of two-photon fluorescence imaging, we show that using a suitable number of measurements, precise correction can be obtained for up to 2 radians rms aberrations without optimising the aberration modes used for correction. We also investigate the number of photons required for accurate correction when signal acquisition is shot-noise limited. We show that only 10(4) to 10(5) photons are required for complete correction so that the correction process can be implemented with limited extra-illumination and associated photoperturbation. Finally, we provide guidelines for implementing an optimal correction algorithm depending on the experimental conditions.
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https://hal.archives-ouvertes.fr/hal-00681943
Contributor : Delphine Débarre <>
Submitted on : Monday, October 28, 2013 - 3:52:55 PM
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Aurélie Facomprez, Emmanuel Beaurepaire, Delphine Débarre. Accuracy of correction in modal sensorless adaptive optics.. Optics Express, Optical Society of America, 2012, 20 (3), pp.2598-612. ⟨hal-00681943⟩

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