Fig. 1. Radial light intensity distributions of MCAB and ordinary CAB, where solid line represents LHCP component E+ and dashed line represents RHCP component E-. (a)‒(b) Light intensity distributions of MCAB at propagation distances z=0 mm and z=100 mm; (c)‒(d) light intensity distributions of ordinary CAB at propagation distances z=0 mm and z=100 mm

Fig. 2. Transverse distributions of MCAB. (a) Light intensity distribution of MCAB beam in initial plane; (b) interference pattern of E-/max(E-) with unit plane wave at z=100 mm; (c) light intensity distribution of LHCP component E+ at z=100 mm; (d) light intensity distribution of RHCP component E- at z=100 mm; (e) phase distribution of LHCP component E+ at z=100 mm; (f) phase distribution of RHCP E- component at z=100 mm

Fig. 3. Polarization distribution of MCAB at z=100 mm

Fig. 4. Autofocusing intensity coefficient Im/I0m of MCAB (solid line) and ordinary CAB (dashed line) versus propagation distance z.

Fig. 5. Propagation dynamics of MCAB in uniaxial crystal. (a) LHCP component E+; (b) RHCP component E-

Fig. 6. Normalized power of LHCP component E+ and RHCP component E-, where MCAB is showed by solid line and normal CAB is showed by dashed line