Spin and wavelength multiplexed nonlinear metasurface holography.
Metasurfaces, as the ultrathin version of metamaterials, have caught growing attention due to their superior capability in controlling the phase, amplitude and polarization states of light. Among various types of metasurfaces, geometric metasurface that encodes a geometric or Pancharatnam-Berry phase into the orientation angle of the constituent meta-atoms has shown great potential in controlling light in both linear and nonlinear optical regimes. The robust and dispersionless nature of the geometric phase simplifies the wave manipulation tremendously. Benefitting from the continuous phase control, metasurface holography has exhibited advantages over conventional depth controlled holography with discretized phase levels. Here we report on spin and wavelength multiplexed nonlinear metasurface holography, which allows construction of multiple target holographic images carried independently by the fundamental and harmonic generation waves of different spins. The nonlinear holograms provide independent, nondispersive and crosstalk-free post-selective channels for holographic multiplexing and multidimensional optical data storages, anti-counterfeiting, and optical encryption.
School of Physics and Astronomy, University of Birmingham, Birmingham B15 2TT, UK.|College of Optoelectronic Science and Engineering, National University of Defense Technology, Changsha 410073, China.
Weimin
W
Ye
Department of Physics, University of Paderborn, Warburger Straße 100, D-33098 Paderborn, Germany.
Franziska
F
Zeuner
School of Physics and Astronomy, University of Birmingham, Birmingham B15 2TT, UK.|Beijing Engineering Research Center for Mixed Reality and Novel Display Technology, School of Optoelectronics, Beijing Institute of Technology, Beijing 100081, China.
Xin
X
Li
Department of Physics, University of Paderborn, Warburger Straße 100, D-33098 Paderborn, Germany.
Bernhard
B
Reineke
School of Computer Science, University of Birmingham, Birmingham B15 2TT, UK.
Shan
S
He
Department of Electrical and Computer Engineering, National University of Singapore, Singapore 117583, Singapore.
Cheng-Wei
CW
Qiu
Beijing Engineering Research Center for Mixed Reality and Novel Display Technology, School of Optoelectronics, Beijing Institute of Technology, Beijing 100081, China.
Juan
J
Liu
Beijing Engineering Research Center for Mixed Reality and Novel Display Technology, School of Optoelectronics, Beijing Institute of Technology, Beijing 100081, China.
Yongtian
0000-0001-9422-0888
Y
Wang
School of Physics and Astronomy, University of Birmingham, Birmingham B15 2TT, UK.
Shuang
S
Zhang
Department of Physics, University of Paderborn, Warburger Straße 100, D-33098 Paderborn, Germany.
Thomas
0000-0002-8662-1101
T
Zentgraf