Antireflection-assisted all-dielectric terahertz metamaterial polarization converter

We present a transmissive all-dielectric terahertz (THz) metamaterial half-wave plate with a double-working-layer structure. One layer works as a half-wave plate to enable polarization conversion of the incident THz wave, and the other layer functions as an antireflection layer to improve the transmission. The device is made of pure silicon only and can realize a high-performance polarization conversion at the designed THz frequency. Numerical simulations have been performed to show how the polarization properties of the THz wave can be adjusted by the structural parameters of the metamaterial. With appropriate structural parameters, the transmission for cross-polarization can reach 90%, and the polarization conversion rate can reach almost 100% at the designed operation frequency of 1 THz in simulation. Several samples have been fabricated and characterized, and the experimental results show a cross-polarized transmission of about 80% and a polarization conversion rate of almost 100% and agree well with the simulations.

[1]  Jianguo Tian,et al.  Realization of broadband cross-polarization conversion in transmission mode in the terahertz region using a single-layer metasurface. , 2015, Optics letters.

[2]  Tie Jun Cui,et al.  Concepts, Working Principles, and Applications of Coding and Programmable Metamaterials , 2017 .

[3]  Jae‐Hyung Jang,et al.  A terahertz in-line polarization converter based on through-via connected double layer slot structures , 2017, Scientific Reports.

[4]  XiaoFei Zang,et al.  Excitation of dark multipolar plasmonic resonances at terahertz frequencies , 2016, Scientific Reports.

[5]  Jae-Hyung Jang,et al.  Terahertz Modulator based on Metamaterials integrated with Metal-Semiconductor-Metal Varactors , 2016, Scientific Reports.

[6]  Shuncong Zhong,et al.  Tunable Terahertz Plasmonic Sensor Based on Graphene/Insulator Stacks , 2017, IEEE Photonics Journal.

[7]  Fei Fan,et al.  Artificial high birefringence in all-dielectric gradient grating for broadband terahertz waves , 2016, Scientific Reports.

[8]  E. Kaveeva,et al.  Terahertz polarization conversion with quartz waveplate sets. , 2013, Applied optics.

[9]  Kebin Fan,et al.  Experimental realization of a terahertz all-dielectric metasurface absorber. , 2017, Optics express.

[10]  Romeo Beccherelli,et al.  Electrically tunable terahertz polarization converter based on overcoupled metal-isolator-metal metamaterials infiltrated with liquid crystals , 2017, Nanotechnology.

[11]  Jiaguang Han,et al.  Terahertz polarization converter based on all-dielectric high birefringence metamaterial with elliptical air holes , 2018, Optics Communications.

[12]  Withawat Withayachumnankul,et al.  Recent Progress in Terahertz Metasurfaces , 2017 .

[13]  Weili Zhang,et al.  Manipulating polarization states of terahertz radiation using metamaterials , 2012 .

[14]  David R. Smith,et al.  Toward Multispectral Imaging with Colloidal Metasurface Pixels , 2017, Advanced materials.

[15]  Ke Yang,et al.  Biomedical Applications of Terahertz Spectroscopy and Imaging. , 2016, Trends in biotechnology.

[16]  Ryoichi Fukasawa,et al.  Terahertz Imaging: Widespread Industrial Application in Non-destructive Inspection and Chemical Analysis , 2015, IEEE Transactions on Terahertz Science and Technology.

[17]  Tie Jun Cui,et al.  Defect‐Induced Fano Resonances in Corrugated Plasmonic Metamaterials , 2017 .

[18]  Derek Abbott,et al.  Dielectric Resonator Reflectarray as High-Efficiency Nonuniform Terahertz Metasurface , 2016 .

[19]  Xin Zhang,et al.  A three-dimensional all-metal terahertz metamaterial perfect absorber , 2017 .

[20]  F. Miyamaru,et al.  Freestanding transparent terahertz half-wave plate using subwavelength cut-wire pairs. , 2017, Optics express.

[21]  K. Wiesauer,et al.  Recent Advances in Birefringence Studies at THz Frequencies , 2013 .

[22]  Cyril C. Renaud,et al.  Advances in terahertz communications accelerated by photonics , 2016, Nature Photonics.

[23]  Yan Nie,et al.  A polarization-insensitive and omnidirectional broadband terahertz metamaterial absorber based on coplanar multi-squares films , 2013 .

[24]  Hyunsoo Yang,et al.  Flexible terahertz modulator based on coplanar-gate graphene field-effect transistor structure. , 2016, Optics letters.

[25]  Yandong Gong,et al.  Switchable Ultrathin Quarter-wave Plate in Terahertz Using Active Phase-change Metasurface , 2015, Scientific Reports.

[26]  Jean-Baptiste Masson,et al.  Terahertz achromatic quarter-wave plate. , 2006, Optics letters.

[27]  S. Tretyakov,et al.  Metasurfaces: From microwaves to visible , 2016 .

[28]  W. Fan,et al.  Ultrasensitive terahertz metamaterial sensor based on spoof surface plasmon , 2017, Scientific Reports.

[29]  Christophe Fumeaux,et al.  Broadband Terahertz Circular‐Polarization Beam Splitter , 2018 .

[30]  Broadband terahertz half-wave plate based on anisotropic polarization conversion metamaterials , 2017 .

[31]  Pingan Liu,et al.  Narrow bandpass tunable terahertz filter based on photonic crystal cavity. , 2012, Applied optics.

[32]  W H Southwell,et al.  Antireflection surfaces in silicon using binary optics technology. , 1992, Applied optics.

[33]  Willie J Padilla,et al.  THz Wave Modulators: A Brief Review on Different Modulation Techniques , 2013 .

[34]  Yiming Zhu,et al.  Controllable multiband terahertz notch filter based on a parallel plate waveguide with a single deep groove. , 2014, Optics letters.

[35]  D. Grischkowsky,et al.  Far-infrared time-domain spectroscopy with terahertz beams of dielectrics and semiconductors , 1990 .