Figure 7
From: Generating Bessel beams with broad depth-of-field by using phase-only acoustic holograms
Results for the zero-th order Bessel beams. Field distribution in the (a1) sagittal plane, (a2) axial direction and (a3) transverse direction (at z = 35 mm) for the fraxicon lens. Field distribution in the (b1) sagittal plane, (b2) axial direction and (b3) transverse direction (at z = 35 mm) for the phase-only hologram. (c1–c3) Field magnitude (|p|) in the transverse direction (at z = 35 mm) for the fraxicon obtained using theory (c1), simulations (c2) and experiments (c3) for the fraxicon. (d1–d3) Corresponding field in the transverse direction for the phase-only hologram. Phase of the field (ϕ) in the transversal direction for (e1–e3) the fraxicon and (f1–f3) phase-only hologram.
