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Fig. 1 | PhotoniX

Fig. 1

From: Cellular-resolution in vivo tomography in turbid tissue through digital aberration correction

Fig. 1

Schematic depicting the amplitude-division aperture synthesis method and interferometric wavefront distortion correction. Aperture-division detection is achieved by dividing the sample beam by the amplitude and displacing the divided beams over the plane of the objective-lens pupil. Detection of spatial-frequency division enables the distortions of the optical wavefront to be recorded as the interferometric wavefront distortions pass through the pinhole detector. The digital correction of the interferometric wavefront distortions can restore both the PSF and the signal amplitude. PSF1: PSF degraded by aberrations; PSF2: restored PSF; BS: beam splitter; BD: beam displacer; OPE: optical pathlength encoder; 1-n, represents the sub-aperture numbers; OW: optical wavefront; PD: pinhole detector; IW: interferometric wavefront and FFT: fast Fourier transform

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