Aberration measurement and correction on a large field of view in fluorescence microscopy

TL;DR

This paper introduces a plug-and-play module for aberration measurement and correction in fluorescence microscopy, enabling wide-field correction through wavefront reconstruction and anisoplanatic deconvolution, improving resolution across the entire field of view.

Contribution

A novel, compact module for aberration correction in fluorescence microscopy that achieves wide-field correction via direct wavefront measurement and anisoplanatic deconvolution.

Findings

Effective aberration correction over the full field of view.

Implementation in fluorescence and light sheet microscopes.

Improved image resolution across the entire field.

Abstract

The aberrations induced by the sample and/or by the sample holder limit the resolution of optical microscopes. Wavefront correction can be achieved using a deformable mirror with wavefront sensorless optimization algorithms but, despite the complexity of these systems, the level of correction is often limited to a small area in the field of view of the microscope. In this work, we present a plug and play module for aberration measurement and correction. The wavefront correction is performed through direct wavefront reconstruction using the spinning-pupil aberration measurement and controlling a deformable lens in closed loop. The lens corrects the aberrations in the center of the field of view, leaving residual aberrations at the margins, that are removed by anisoplanatic deconvolution. We present experimental results obtained in fluorescence microscopy, with a wide field and a light sheet fluorescence microscope. These results indicate that detection and correction over the full field of view can be achieved with a compact transmissive module placed in the detection path of the fluorescence microscope.