Run Hu, Fengtie Wu, Qingzhi Zhu, Yanfei Yang. Influence of Off-Axis Astigmatism on High Order Bessel Beam[J]. Acta Optica Sinica, 2017, 37(8): 0826002
- Acta Optica Sinica
- Vol. 37, Issue 8, 0826002 (2017)
Fig. 1. Diagram of an axicon illuminated by an oblique vortex beams
Fig. 2. Relationship between C(h) and h under different deflection angles
Fig. 3. Numerical simulation for diffraction pattern under different deflection angles at a distance of z=500 mm
Fig. 4. Numerical simulation for diffraction pattern of divided dark cores. (a) m=2, η=5°; (b) m=3, η=7°; (c) m=4, η=8°; (d) m=5, η=9°
Fig. 5. Line chart of topological charge and appropriate deflection angle at a distance of z=500 mm
Fig. 6. Numerical simulation for diffraction pattern of divided dark cores at different distances (m=4, η=9°).(a) z=250 mm; (b) z=300 mm; (c) z=350 mm; (d) z=400 mm; (e) z=450 mm
Fig. 7. Experimental setup
Fig. 8. Experimental diffraction patterns under different deflection angles
Fig. 9. Experimental diffraction patterns of divided dark cores. (a) m=2, η=5°; (b) m=3, η=7°; (c) m=4, η=8°; (d) m=5, η=9°
Fig. 10. Experimental diffraction patterns of divided dark cores at different distances (m=4, η=9°). (a) z=250 mm; (b) z=300 mm; (c) z=350 mm; (d) z=400 mm; (e) z=450 mm
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