Institut Für Nanophotonik Göttingen E.v.

Francesco Rocca

Alexander Egner

Claudia Geisler

For correcting aberration-induced imaging errors of an optical system which includes an objective () and an adaptive optic (), light () and a sample () are selected such that the light (), in acting upon the sample (), reduces a measurement signal () from the sample (), wherein a relative variation of the measurement signal () depends on the intensity of the light (). The measurement signal () from a focal area of the optical system in the sample () is registered over a first and a later second period of time () to determine a first measurement value and a second measurement value. Over a third period of time () which overlaps with the first and/or the second period of time, the light () is focused into the focal area by means of the optical system. A measure value for the relative variation of the measurement signal () is determined from the first and the second measurement values and used in controlling the adaptive optic () as a metric to be optimized.

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Goettingen, Germany

Francesco Rocca