Aberrations

Alias-free basis for modal sensorless adaptive optics using the second moment of intensity

In theory of optical aberrations, an aberrated wavefront is represented by its coefficients in some orthogonal basis, for instance by Zernike polynomials. However, many wavefront measurement techniques implicitly approximate the gradient of the …

High speed wavefront sensorless aberration correction in digital micromirror based confocal microscopy

The quality of fluorescence microscopy images is often impaired by the presence of sample induced optical aberrations. Adaptive optical elements such as deformable mirrors or spatial light modulators can be used to correct aberrations. However, …

Rapid identication of coherent pupil functions from multiple intensity measurements

By taking multiple input-output measurements, it is shown how to determine the input to an optical system that corrects unknown phase aberrations without interferometric measurements or online iterative optimization within a couple of seconds. It is …