Figure 2
From: Cancellation of Bessel beam side lobes for high-contrast light sheet microscopy
(a) Plot of the ratio between the optical power (for z = 0) distributed across the droplet side lobes with respect to the Bessel lobe power as a function of the ratio r2/r1. The solid line is the theoretical prediction while red dots are experimental data. A plot of the ratio between the axial FWHM of the droplet beam and the Gaussian beam as a function of the ratio r2/r1 is reported in the same graph. Top-view (xz plane) (b) and radial (c) intensity profiles of a Gaussian, an ideal Bessel beam (\(\epsilon =1\)) and a short Bessel beam (\(\epsilon =0.78\)) of comparable axial FWHM to that of the droplet beam as a function of the number of Rayleigh lengths and for an equal NA. For r2/r1 ~ 0.57, the light distributed across the droplet side lobes is about 62% and 48% lower than that of an ideal and a short Bessel beam respectively. Associated beam amplitude masks (inset).
