Polarization-Insensitive Metalens with Extended Focal Depth and Longitudinal High-Tolerance Imaging

Zang, X.; Xu, W.; Gu, M.; BingShuang, Y.; Lin, C.; Yan, P.; JingYa, X.; V, B.A.; P, S.A.; SongLin, Z.

Статья опубликована в высокорейтинговом журнале

Информация о цитировании статьи получена из Web of Science, Scopus
Статья опубликована в журнале из списка Web of Science и/или Scopus
Дата последнего поиска статьи во внешних источниках: 29 января 2020 г.

Авторы: Zang XiaoFei, WeiWei Xu, Min Gu, Yao BingShuang, Chen Lin, Peng Yan, Xie JingYa, Balakin Alexey V., Shkurinov Alexander P., Zhuang SongLin
Журнал: Advanced Optical Materials
Том: 8
Номер: 2
Год издания: 2020
Первая страница: 1901342
DOI: 10.1002/adom.201901342
Аннотация: Abstract Lenses with an extended focal depth have crucial applications in high-precision optical alignment systems and optical disk readout systems. However, further development of lenses with an extended focal depth under radial and angular modulation is limited because of fabrication difficulties. Metasurfaces, 2D metamaterials, have shown unprecedented capabilities in the manipulation of the intensity, phase, and polarization of electromagnetic waves. Here, based on geometric metasurfaces, an approach for realizing a terahertz metalens is proposed and experimentally demonstrated with simultaneous extended focal depth and polarization insensitivity. Under the illumination of arbitrarily polarized light, this metalens shows a focal depth of вЙИ23 ќї along the propagation direction, resulting in an ultralong longitudinal working distance. As a proof-of-concept, longitudinal high-tolerance imaging based on the metalens is demonstrated. The unique approach for designing polarization-insensitive metalenses with an extended focal depth may find applications in imaging, lithography, and information processing.
Добавил в систему: Шкуринов Александр Павлович

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Polarization-Insensitive Metalens with Extended Focal Depth and Longitudinal High-Tolerance Imagingстатья

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