Fig. 1. Propagation of Bessel beam in biological tissue. (a) Schematic of experimental setup; (b) schematic of biological tissue model; (c) generated Bessel beam; (d) superimposed phase hologram of axicon phase and vortex beam phase

Fig. 2. Images of mouse liver tissue. (a) Phase-contrast image of mouse liver tissue; (b) binary image; (c) power spectrum density curve of refractive index variations corresponding to binary image; (d) turbulent refractive index distribution obtained by Fourier transformation of Fig.2(c)

Fig. 3. Influence of axicon angle on zeroth-order Bessel beam self-reconstruction. Self-reconstruction of the zeroth-order Bessel beam generated with axicon angles of (a) 0.6°，(b) 1.0°，and (c) 1.4°，respectively. The first and second rows in (a), (b) and (c) show the experimental and simulation results, respectively

Fig. 4. Influence of topical charge number on Bessel beam self-reconstruction. Self-reconstruction of Bessel beam generated with topical charge number of (a) 0, (b) 1, and (c) 2, respectively. The first and second rows in (a), (b), and (c) show the experimental and simulation results, respectively

Fig. 5. Influence of thickness of mouse liver tissue slice on Bessel beam self-reconstruction.Self-reconstruction of the zeroth-order Bessel beam generated with slice thickness of (a) 15 μm, (b) 10 μm, and (c) 5 μm, respectively. The first and second rows in (a), (b), and (c) show the experimental and simulation results, respectively