Figure 5
From: Diffraction-free light droplets for axially-resolved volume imaging
Top view of the droplet intensity distribution and contour (red dashed) lines of a focused Gaussian beam (a). A set of images were acquired at three different z-positions along the illumination axis (b). Images acquired at the focal plane (z = z 1) with both Gauss and droplet illuminations exhibited equal contrast. However, as the sample was axially displaced from the focal plane, the contrast given by the Gaussian illumination rapidly dropped to zero, whereas the droplet illumination gave a decrease (z = z 2) followed by a 10x-increase (z = z 3) in the image contrast, the manifestation of the droplet axial-localization.
