Reflective terahertz metalens with hybrid phase design for high-efficiency off-axis focusing
收藏科学数据银行2025-10-21 更新2026-04-23 收录
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资源简介：
A reflective terahertz metalens, optimized at 0.89 THz, capable of high-efficiency off-axis Bessel beam focusing is proposed and numerically demonstrated. The design utilizes a hybrid phase profile combining conical and hyperbolic components, computed using a vector-based formulation for precise wavefront control. Simulations confirm stable transverse confinement and an extended depth of focus exceeding 20 λ for deflection angles of 5°, 10°, and 15°. Our metalens maintains focusing efficiencies above 70% in all cases, validating the robustness of the design. The proposed approach offers a compact and effective solution for off-axis focusing in terahertz systems, with potential for integration in advanced imaging, beam steering, and spectroscopic devices.
提供机构：
Weiping Wu; Chenlu Mao; Fenghua Liu; Skolkovo Institute of Science and Technology; Xiaoman Li; RAZA MOHSIN
创建时间：
2025-10-21
