Fig. 1. Experimental setup. (a) Interference device for non-polarized Gaussian beam and circularly polarized vortex beam; (b) interference device for linearly polarized Gaussian beam and linearly polarized vortex beam; (c) interference device for linearly polarized Gaussian beam and circularly polarized vortex beam; (d) interference device for circularly polarized Gaussian beam and circularly polarized vortex beam

Fig. 2. Intensity distribution of vortex beam with l=4. (a) Simulation result; (b) experimental result

Fig. 3. Interference patterns of non-polarized Gaussian beam and circularly polarized vortex beam with included angle of 0°.(a)(b) Simulated interference patterns; (c)(d) measured interference patterns

Fig. 4. Experimental interference patterns of non-polarized Gaussian beam and right-handed circularly polarized vortex beam with included angle not equal to 0°. (a) Included angle of 0.02°; (b) included angle of -0.02°; (c) included angle of 0.04°; (d) included angle of -0.04°

Fig. 5. Experimental interference patterns of non-polarized Gaussian beam and left-handed circularly polarized vortex beam with included angle not equal to 0°. (a) Included angle of 0.02°; (b) included angle of -0.02°; (c) included angle of 0.04°; (d) included angle of -0.04°

Fig. 6. Interference patterns of linearly polarized Gaussian beam and linearly polarized vortex beam polarized beam (l=-4) with included angle of 0°. (a) Simulated interference pattern; (b) measured interference pattern

Fig. 7. Experimental interference patterns of linearly polarized Gaussian beam and linearly polarized vortex beam with included angle not equal to 0°. (a) Included angle of 0.02°; (b) included angle of -0.02°; (c) included angle of 0.04°; (d) included angle of -0.04°

Fig. 8. Interference patterns of linearly polarized Gaussian beam and circularly polarized vortex beam with included angle of 0°.(a)(b) Simulated interference patterns; (c)(d) measured interference patterns

Fig. 9. Experimental interference patterns of linearly polarized Gaussian beam and right-handed circularly polarized vortex beam with included angle not equal to 0°. (a) Included angle of 0.02°; (b) included angle of -0.02°; (c) included angle of 0.04°; (d) included angle of -0.04°

Fig. 10. Experimental interference patterns of linearly polarized Gaussian beam and left-handed circularly polarized vortex beam with included angle not equal to 0°. (a) Included angle of 0.02°; (b) included angle of -0.02°; (c) included angle of 0.04°; (d) included angle of -0.04°

Fig. 11. Interference patterns of circularly polarized Gaussian beam and circularly polarized vortex beam with included angle of 0°.(a)(b) Simulated interference patterns; (c)(d) measured interference patterns

Fig. 12. Experimental interference patterns of right-handed circularly polarized Gaussian beam and right-handed circularly polarized vortex beam with included angle not equal to 0°. (a) Included angle of 0.02°; (b) included angle of -0.02°; (c) included angle of 0.04°; (d) included angle of -0.04°

Fig. 13. Experimental interference patterns of left-handed circularly polarized Gaussian beam and left-handed circularly polarized vortex beam with included angle not equal to 0°. (a) Included angle of 0.02°; (b) included angle of -0.02°; (c) included angle of 0.04°; (d) included angle of -0.04°