TY - JOUR
T1 - Dual-functional optical waveplates based on gap-surface plasmon metasurfaces
AU - Cai, Ziru
AU - Deng, Yadong
AU - Wu, Cuo
AU - Meng, Chao
AU - Ding, Yingtao
AU - Bozhevolnyi, Sergey I.
AU - Ding, Fei
N1 - Publisher Copyright:
© 2021 Wiley-VCH GmbH
PY - 2021/6/4
Y1 - 2021/6/4
N2 - Gap-surface plasmon (GSP) metasurfaces have attracted increasing attention and have become an emerging research area due to their planar configurations, high efficiencies, ease of fabrication, and unprecedented capabilities in manipulating reflected fields, thereby allowing one to reduce a set of bulky optical components to a single ultrathin element with multiplexed functionalities. Herein, a reflective dual-functional optical waveplate based on periodic GSP meta-molecules is designed and experimentally demonstrated, exhibiting combined quarter-waveplate and half-waveplate functionalities, i.e., providing linear-to-circular and linear-to-linear polarization conversion simultaneously, at the same operating wavelength for orthogonal linear polarizations. The proof-of-concept fabricated metasurface demonstrates excellent and distinct polarization conversion functionalities with the efficiencies of ≈73% and 30% at the design wavelength of 850 nm for the orthogonal incident polarizations, well in agreement with the simulations. Owing to the compactness and excellent performance, the demonstrated reflective dual-functional optical waveplate opens yet another avenue for further development of flat polarization optical components with multiplexed functionalities.
AB - Gap-surface plasmon (GSP) metasurfaces have attracted increasing attention and have become an emerging research area due to their planar configurations, high efficiencies, ease of fabrication, and unprecedented capabilities in manipulating reflected fields, thereby allowing one to reduce a set of bulky optical components to a single ultrathin element with multiplexed functionalities. Herein, a reflective dual-functional optical waveplate based on periodic GSP meta-molecules is designed and experimentally demonstrated, exhibiting combined quarter-waveplate and half-waveplate functionalities, i.e., providing linear-to-circular and linear-to-linear polarization conversion simultaneously, at the same operating wavelength for orthogonal linear polarizations. The proof-of-concept fabricated metasurface demonstrates excellent and distinct polarization conversion functionalities with the efficiencies of ≈73% and 30% at the design wavelength of 850 nm for the orthogonal incident polarizations, well in agreement with the simulations. Owing to the compactness and excellent performance, the demonstrated reflective dual-functional optical waveplate opens yet another avenue for further development of flat polarization optical components with multiplexed functionalities.
KW - dual-functional waveplate
KW - gap-surface plasmon metasurfaces
KW - optical range
KW - waveplates
U2 - 10.1002/adom.202002253
DO - 10.1002/adom.202002253
M3 - Journal article
AN - SCOPUS:85103153308
VL - 9
JO - Advanced Optical Materials
JF - Advanced Optical Materials
SN - 2195-1071
IS - 11
M1 - 2002253
ER -