Hongyan Li, Yanfang Yang, Ying He, Huihui Duan, Xiyu Yan. Conversion Between Special Focal Field Structures Based on 4pi Focusing System[J]. Acta Optica Sinica, 2020, 40(12): 1226001
- Acta Optica Sinica
- Vol. 40, Issue 12, 1226001 (2020)
Fig. 1. Schematic of 4pi focusing optical system. (a) Tightly focusing optical system; (b) structure of DOE
Fig. 2. Intensity distribution of angularly polarized vortex beam in 4pi focusing system. (a) Intensity distribution of light field in ρ-z plane; (b) radial linear-type distribution of total intensity; (c) longitudinal linear-type distribution of total intensity
Fig. 3. Total intensity. (a) Total intensity distribution in ρ-z plane; (b) linear-type distribution of total intensity along ρ-axis in z=0 plane
Fig. 4. Total intensity distributions along ρ-axis in z=0 plane under different δ4 values
Fig. 5. Total intensity distribution along ρ-axis in z=0 plane under different
Fig. 6. Total intensity distribution in z=0 plane along ρ-axis with different β
Fig. 7. Total intensity distribution in ρ-z plane when NA=0.95 and β=1.3
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