Yu Liang, Yuanyuan Xu, Yang Zou, Shuangshuang Xue, Jingrong Liao, Wenyan Pan, Yawei Wang. Design of Achromatic Polarization-Insensitive Metalens[J]. Chinese Journal of Lasers, 2021, 48(3): 0303001
- Chinese Journal of Lasers
- Vol. 48, Issue 3, 0303001 (2021)
Fig. 1. Schematic of focusing by metalens
Fig. 2. Flow chart of particle swarm optimization algorithm
Fig. 3. Phase of unit column under different widths and wavelengths
Fig. 4. Comparison between standard focus phase profile and optimized phase profile at different wavelengths.(a) 500 nm; (b) 510 nm; (c) 520 nm; (d) 530 nm; (e) 540 nm; (f) 550 nm
Fig. 5. Unit nanopillar and structural arrangement of metalens. (a)Top view of metalens structure; (b) unit nanopillar; (c) top view of unit nanopillar
Fig. 6. Focus comparison between achromatic metalens and chromatic metalens. (a) Achromatic; (b)chromatic
Fig. 7. Reflectivity of reflected beam in xoy plane under different wavelengths
Fig. 8. Diffraction efficiency of polarized incident light
Set citation alerts for the article
Please enter your email address
© Copyright 2018-2021 | Chinese Laser Press. All Rights Reserved 沪ICP备15018463号-20