Wavelength de-multiplexing metasurface hologram.
Wavelength de-multiplexing metasurface hologram.
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波长解复用超表面全息图
DOI:
10.1038/srep35657
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发表时间:
2016-10-18
影响因子:
4.6
通讯作者:
Zhang Y
中科院分区:
文献类型:
--
作者:
Wang B;Quan B;He J;Xie Z;Wang X;Li J;Kan Q;Zhang Y
A wavelength de-multiplexing metasurface hologram composed of subwavelength metallic antennas is designed and demonstrated experimentally in the terahertz (THz) regime. Different character patterns are generated at the separated working frequencies 0.50 THz and 0.63 THz which determine a narrow frequency bandwidth of 130 GHz. The two working frequencies are around the central resonance frequency of the antennas where antennas behave strong wavefront modulation. Each antenna is fully utilized to control the wavefront of the metasurface at different frequencies by an optimization algorithm. The results demonstrate a candidate way to design multi-colors optical display elements.
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