Wavelength de-multiplexing metasurface hologram

被引：0
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作者：
Bo Wang
Baogang Quan
Jingwen He
Zhenwei Xie
Xinke Wang
Junjie Li
Qiang Kan
Yan Zhang
机构：
[1] Capital Normal University,Department of Physics
[2] Beijing Key Laboratory of Metamaterials and Devices,Department of Physics
[3] Key Laboratory of Terahertz Optoelectronics,undefined
[4] Ministry of Education,undefined
[5] and Beijing Advanced Innovation Center for Imaging Technology,undefined
[6] Beijing National Laboratory for Condensed Matter Physics,undefined
[7] Institute of Physics,undefined
[8] Chinese Academy of Sciences,undefined
[9] Harbin Institute of Technology,undefined
[10] Key Laboratory of Semiconductor Materials Science,undefined
[11] Institute of Semiconductors,undefined
[12] Chinese Academy of Science,undefined
来源：
Scientific Reports | / 6卷
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摘要：
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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