title: Independent modulations of the transmission amplitudes and phases by using Huygens metasurfaces.
abstract: We propose ultrathin Huygens metasurfaces to control transmission amplitudes and phases of electromagnetic waves independently, in which each unit cell is comprised of an electric dipole and a magnetic dipole. By altering the electric and magnetic responses of unit cells, arbitrary complex transmission coefficients with modulus values smaller than 0.85 are obtained. Two Huygens metasurfaces capable of controlling the diffraction orders are designed and fabricated by modulating the distributions of the complex transmission coefficients. More complicated functions such as holographic imaging can also be accomplished by using the proposed Huygens metasurfaces.
authors.affiliation: State Key Laboratory of Millimeter Waves, School of Information of Science and Engineering, Southeast University, Nanjing 210096, China.|Synergetic Innovation Center of Wireless Communication Technology, Southeast University, Nanjing, 210096, China.
authors.forename: Xiang
authors.initials: X
authors.lastname: Wan
authors.affiliation: State Key Laboratory of Millimeter Waves, School of Information of Science and Engineering, Southeast University, Nanjing 210096, China.|Key Laboratory of Radar Imaging and Microwave Photonics, Ministry of Education, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China.
authors.forename: Sheng Li
authors.initials: SL
authors.lastname: Jia
authors.affiliation: State Key Laboratory of Millimeter Waves, School of Information of Science and Engineering, Southeast University, Nanjing 210096, China.|Cooperative Innovation Center of Terahertz Science, Chengdu 611731, China.
authors.forename: Tie Jun
authors.initials: TJ
authors.lastname: Cui
authors.affiliation: Key Laboratory of Radar Imaging and Microwave Photonics, Ministry of Education, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China.
authors.forename: Yong Jiu
authors.initials: YJ
authors.lastname: Zhao