Efficient Inverse Design of Large-Scale, Ultrahigh-Numerical-Aperture Metalens DOI Creative Commons

Yongle Zhou,

Yikun Liu, Haowen Liang

et al.

Photonics, Journal Year: 2024, Volume and Issue: 11(10), P. 940 - 940

Published: Oct. 6, 2024

Efficient design methods for large-scale metalenses are crucial various applications. The conventional phase-mapping method shows a weak performance under large phase gradients, thus limiting the efficiency and quality of large-scale, high-numerical-aperture metalenses. While inverse can partially address this issue, existing solutions either accommodate only small-scale due to high computational demands or compromise on focusing performance. We propose an efficient based optimization approach combined with adjoint-based level-set method, which first forms one-dimensional metalens then extends it two dimensions. Taking fabrication constraints into account, our large-area near-unity numerical aperture (NA = 0.99) has improved from 42% 60% in simulations compared method. Additionally, reduced deformation spot caused by ultrahigh aperture. This retains benefits while significantly reducing burden, thereby advancing development design. It also be extended other metasurface designs.

Language: Английский

Spin-controlled generation of a complete polarization set with randomly-interleaved plasmonic metasurfaces DOI Creative Commons
Sören im Sande, Yadong Deng, Sergey I. Bozhevolnyi

et al.

Opto-Electronic Advances, Journal Year: 2024, Volume and Issue: 7(8), P. 240076 - 240076

Published: Jan. 1, 2024

Optical metasurfaces, comprising subwavelength quasi-planar nanostructures, constitute a universal platform for manipulating the amplitude, phase, and polarization of light, thus paving way next generation highly integrated multifunctional optical devices. In this work, we introduce reflective metasurface complete (angularly resolved) set by randomly interleaving anisotropic plasmonic meta-atoms acting as nanoscale wave plates. proof-of-concept demonstration, achieve multidirectional beam-steering into different channels forming states, which can also be dynamically altered switching spin incident light. The developed design concept represents significant advancement in achieving flat optics with advanced functionalities.

Language: Английский

Citations

11
Generating arrays of perfect vector vortex beam with six on-demand degrees of freedom in metasurfaces DOI
Changda Zhou, Yaqin Zheng,

Guoli He

et al.

Science China Physics Mechanics and Astronomy, Journal Year: 2025, Volume and Issue: 68(5)

Published: Feb. 26, 2025

Language: Английский

Citations

0
基于微纳结构的片上红外偏振成像器件研究进展（特邀） DOI

汪玲芳 Wang Lingfang,

周易 Zhou Yi,

周建 Zhou Jian

et al.

Chinese Journal of Lasers, Journal Year: 2025, Volume and Issue: 52(5), P. 0501002 - 0501002

Published: Jan. 1, 2025

Citations

0
Dispersion-engineered spin photonics based on folded-path metasurfaces DOI Creative Commons
Fei Zhang,

Hanlin Bao,

Mingbo Pu

et al.

Light Science & Applications, Journal Year: 2025, Volume and Issue: 14(1)

Published: May 16, 2025

Spin photonics revolutionizes photonic technology by enabling precise manipulation of photon spin states, with spin-decoupled metasurfaces emerging as pivotal in complex optical field manipulation. Here, we propose a folded-path metasurface concept that enables independent dispersion and phase control two opposite effectively overcoming the limitations achieving broadband decoupling higher integration levels. This advanced engineering is achieved modifying equivalent length folded path, generated virtual reflective surface, contrast to previous methods depended on effective refractive index altering structural geometries. Our approach unlocks previously unattainable capabilities, such achromatic focusing Hall effect using rotational degree freedom, generating spatiotemporal vector fields only single metasurface. advancement substantially broadens potential metasurface-based photonics, extending its applications from spatial domain domain.

Language: Английский

Citations

0
Efficient Inverse Design of Large-Scale, Ultrahigh-Numerical-Aperture Metalens DOI Creative Commons

Yongle Zhou,

Yikun Liu, Haowen Liang

et al.

Photonics, Journal Year: 2024, Volume and Issue: 11(10), P. 940 - 940

Published: Oct. 6, 2024

Efficient design methods for large-scale metalenses are crucial various applications. The conventional phase-mapping method shows a weak performance under large phase gradients, thus limiting the efficiency and quality of large-scale, high-numerical-aperture metalenses. While inverse can partially address this issue, existing solutions either accommodate only small-scale due to high computational demands or compromise on focusing performance. We propose an efficient based optimization approach combined with adjoint-based level-set method, which first forms one-dimensional metalens then extends it two dimensions. Taking fabrication constraints into account, our large-area near-unity numerical aperture (NA = 0.99) has improved from 42% 60% in simulations compared method. Additionally, reduced deformation spot caused by ultrahigh aperture. This retains benefits while significantly reducing burden, thereby advancing development design. It also be extended other metasurface designs.

Language: Английский

Citations

0