Abstract

A subwavelength-scale Huygens particle utilizing both electric and magnetic responses is proposed here. As the electric and magnetic responses of the proposed particle are independent of each other, arbitrary complex transmission coefficients covering all magnitudes from 0 to 0.9 and all phases (360°) can be achieved by varying its structural parameters. By properly engineering the distribution of transmission magnitudes and phases, a Huygens metasurface grating with excitation of $+1$ order harmonic is designed and fabricated. The measurement results are in agreement with the simulations, further demonstrating the validity of the designed Huygens particle and metasurface.

© 2018 Optical Society of America

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