Xudong Wu, Chenjie Xiong, Jianzhou Huang, Weiguang Liu, Jia Zhang, Bin Hu
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引用次数: 0
Abstract
To cope with the rapid preparation and tunable function of terahertz (THz) devices, a kind of THz beam meta-deflector (BMD) based on a bilayer metasurface doublet is proposed to implement tunable beam deflection with additional functions. By superimposing functional phases on one of the layers and sliding the other layer, the BMDs can achieve continuously beam deflection with beam splitting or beam focusing. It is possible to quickly switch between different functions by replacing the functional phase. As a demonstration, two devices are designed and fabricated by 3D printing, including a splitting BMD (s-BMD) and a focusing BMD (f-BMD). The experimental results show that the designed metasurfaces can achieve a deflection of ±26.96° while achieving a splitting angle of 38.94°-44.11° for the s-BMD and a focus deflection of ±30.76° for the f-BMD. The BMD is expected to be applied as a multifunctional and tunable device in THz communication and imaging.
期刊介绍：
The Optical Society (OSA) publishes high-quality, peer-reviewed articles in its portfolio of journals, which serve the full breadth of the optics and photonics community.
Optics Letters offers rapid dissemination of new results in all areas of optics with short, original, peer-reviewed communications. Optics Letters covers the latest research in optical science, including optical measurements, optical components and devices, atmospheric optics, biomedical optics, Fourier optics, integrated optics, optical processing, optoelectronics, lasers, nonlinear optics, optical storage and holography, optical coherence, polarization, quantum electronics, ultrafast optical phenomena, photonic crystals, and fiber optics. Criteria used in determining acceptability of contributions include newsworthiness to a substantial part of the optics community and the effect of rapid publication on the research of others. This journal, published twice each month, is where readers look for the latest discoveries in optics.
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