Kang Liu, Tao He, Tao Liu, Guo-Qing Li, Bo Tian, Jia-Yi Wang, Shu-Ming Yang. Effect of laser illumination conditions on focusing performance of super-oscillatory lens [J]. Acta Physica Sinica, 2020, 69(18): 184215-1
- Acta Physica Sinica
- Vol. 69, Issue 18, 184215-1 (2020)
Fig. 1. Schematic diagram of diffraction focusing of SOL.
Fig. 2. Focused light field of SOL1 by FDTD simulation: (a) On-axis intensity distribution; (b) transverse intensity distribution in the focal plane (Y -direction).
Fig. 3. Focusing performance of SOL (FDTD): (a) Transverse size; (b) central intensity.
Fig. 4. Focused light field of SOL2 by FDTD simulation: (a) On-axis intensity distribution; (b) transverse intensity distribution in the focal plane (Y -direction).
Fig. 5. Electric field distribution of SOL1 by FDTD simulation: (a) Uniform plane beam illumination; (b) w 0 = a /2 Gaussian beam illumination.
Fig. 6. Focused light intensity of SOL by VAS calculation under BG radially polarized illumination: (a), (b) SOL1; (c), (d) SOL2.
Fig. 7. Schematic diagram of diffraction focused imaging by SOL under oblique illumination.
Fig. 8. Schematic diagram of diffraction focusing by SOL under oblique illumination.
Fig. 9. Focusing results of amplitude-type SOL under oblique illumination: (a), (c), (e) SOL5; (b), (d), (f) SOL6.
Fig. 10. Focal spot size of SOL under oblique illumination: (a) FWHMx ; (b) FWHMz .
Fig. 11. Focal intensity of SOL varying with oblique illumination angle.
Fig. 12. Angle position of focusing spot: (a)
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; (b)
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.
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; (b)
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. Fig. 13. Field curvature of SOL: (a) SOL3; (b) SOL4.
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Table 1. Structural parameters of optimized SOL.
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