TY - GEN
T1 - Wide-angle and continuously zoomed focus using Moiré metasurface structures
AU - Liu, Zheng
AU - Hu, Bin
N1 - Publisher Copyright:
© 2020 SPIE.
PY - 2020
Y1 - 2020
N2 - Metasurfaces are widely applied to realize miniaturized optical devices with high performance, because of the high design freedom. Recently, with the help of optical design, cascaded metalenses with two-layered metasurface, which can correct monochromatic aberration have been proposed for a well-focused light spot in the focal plane at large incident angles. However, the focal length is fixed in these systems. In this paper, we report a wide-angle metalens with continuously tunable focus. Through the optical design method, we obtain a lens phase profile with large field of view. And referring to the principle of Moiré lens, a wide angle (±30°) and continuously zoomed metalens with well focusing at infrared wavelength (810nm) was designed, and its characteristics are verified by numerical simulations. Our metalens has great potential in areas where high imaging quality and tunability.
AB - Metasurfaces are widely applied to realize miniaturized optical devices with high performance, because of the high design freedom. Recently, with the help of optical design, cascaded metalenses with two-layered metasurface, which can correct monochromatic aberration have been proposed for a well-focused light spot in the focal plane at large incident angles. However, the focal length is fixed in these systems. In this paper, we report a wide-angle metalens with continuously tunable focus. Through the optical design method, we obtain a lens phase profile with large field of view. And referring to the principle of Moiré lens, a wide angle (±30°) and continuously zoomed metalens with well focusing at infrared wavelength (810nm) was designed, and its characteristics are verified by numerical simulations. Our metalens has great potential in areas where high imaging quality and tunability.
UR - https://www.scopus.com/pages/publications/85082620023
U2 - 10.1117/12.2548446
DO - 10.1117/12.2548446
M3 - Conference contribution
AN - SCOPUS:85082620023
T3 - Proceedings of SPIE - The International Society for Optical Engineering
BT - 2019 International Conference on Optical Instruments and Technology
A2 - Liu, Juan
A2 - Jia, Baohua
A2 - Yao, Xincheng
A2 - Wang, Yongtian
A2 - Nomura, Takanori
PB - SPIE
T2 - 2019 International Conference on Optical Instruments and Technology: Optical Systems and Modern Optoelectronic Instruments
Y2 - 26 October 2019 through 28 October 2019
ER -