Figure 2
From: Conservation of orbital angular momentum and polarization through biological waveguides
Self-trapping of individual 532 nm green and 780 nm NIR vortex beams through a sheep RBC suspension. (a–d) Normal diffraction of laser beams through PBS buffer solution without RBCs. (e–h) Linear diffraction and scattering of the laser beam at low laser power (20 mW) through RBC suspensions. (i–l) Optimal nonlinear self-trapping and self-focusing of the laser beams at high power. All output beam profiles were imaged at the exit face of the cuvette, (a,c,e,g,i,k) are measurement beams only, (b,d,f,h,j,l) are interferograms between the measurement beam and plane wave reference beam. The inserts in (a,c,e,g,i,k) are the normalized azimuthally averaged radial intensity profiles of the beams.
