Photonics Research, Volume. 8, Issue 6, 963(2020)
Controllable photonic spin Hall effect with phase function construction
Fig. 1. Shifting the (a) incident position onto the P-B phase metasurface carrying the original phases is equivalent to (b) centrally incident on the P-B phase metasurface carrying the original phase and gradient phase.
Fig. 2. (I) Illustration of the twisting phase adding together with the gradient phase. (a)–(c) Two-dimensional slow-axis orientation patterns of the twisting phase, gradient phase, and combination phase. (d)–(i) Phases introduced to the LCP and RCP light. (II) Illustration of the lens phase adding together with the gradient phase. (j)–(l) Two-dimensional slow-axis orientation patterns of the lens phase, gradient phase, and combination phase. (m)–(r) Phases introduced to the LCP and RCP light.
Fig. 3. (a) Illustration of the Gaussian beam illuminating the dielectric P-B phase metasurface. (b) Captured picture of the fabricated metasurface. (c) Polariscopic analysis carried out by optical polarization imaging. (d)–(f) Measured SDS intensity (normalized) images of Gaussian beams at different wavelengths (633, 532, and 475 nm).
Fig. 4. (a) Measured Stokes parameters
Fig. 5. Measured intervals between LCP and RCP components with different incident position shifts at the transmission distance of 500 mm. Cal., calculated; Exp., experimental.
Fig. 6. Measured ellipticities versus the incident polarization (a function of
Fig. 7. (a) Schematic diagram of the experimental setups of arbitrarily singular beams detection based on the geometric P-B phase metasurface. P, polarizer; QWP, quarter-wave plate; MS, metasurface; FL, Fourier lens; CCD, charge-coupled device. (b) Measured
Fig. 8. (a) and (b) Experimental results of the VBs (the topological charges are 1 and 2) diffracting through the metasurface. (c) and (d) Experimental results of the CVBs (the polarization orders are
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Yanliang He, Zhiqiang Xie, Bo Yang, Xueyu Chen, Junmin Liu, Huapeng Ye, Xinxing Zhou, Ying Li, Shuqing Chen, Dianyuan Fan. Controllable photonic spin Hall effect with phase function construction[J]. Photonics Research, 2020, 8(6): 963
Category: Physical Optics
Received: Jan. 21, 2020
Accepted: Apr. 6, 2020
Published Online: May. 21, 2020
The Author Email: Shuqing Chen (shuqingchen@szu.edu.cn)