Wavelength de-multiplexing metasurface hologram

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 freq...

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Detalles Bibliográficos
Autores principales: Wang, Bo, Quan, Baogang, He, Jingwen, Xie, Zhenwei, Wang, Xinke, Li, Junjie, Kan, Qiang, Zhang, Yan
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Publishing Group 2016
Materias:
Article
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5067676/
https://www.ncbi.nlm.nih.gov/pubmed/27752118
http://dx.doi.org/10.1038/srep35657
Descripción
Sumario: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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