Nanoimprint-defined, large-area meta-surfaces for unidirectional optical transmission with superior extinction in the visible-to-infrared range.

Optical devices with asymmetric transmission have important applications in optical systems, but optical isolators with the modal asymmetry can only be built using magneto-optical or nonlinear materials, as dictated by the Lorentz reciprocity theorem. However, optical devices with the power asymmetry can be achieved by linear materials such as metals and dielectrics. In this paper, we report a large-area, nanoimprint-defined meta-surface (stacked subwavelength gratings) with high-contrast asymmetric transmittance in the visible-to-infrared wavelength range for TM-polarized light. The physical origin of asymmetric transmission through the meta-surface is studied by analyzing the scattering matrix.

[1]  S. H. Kim,et al.  Fabrication of a 50 nm half-pitch wire grid polarizer using nanoimprint lithography , 2005 .

[2]  Lei Wang,et al.  Hybrid nanoimprint-soft lithography with sub-15 nm resolution. , 2009, Nano letters.

[3]  Tie Jun Cui,et al.  Broadband chirality and asymmetric transmission in ultrathin 90°-twisted Babinet-inverted metasurfaces , 2014 .

[4]  Cheng Zhang,et al.  High performance bianisotropic metasurfaces: asymmetric transmission of light. , 2014, Physical review letters.

[5]  Christophe Vieu,et al.  Electron beam lithography: resolution limits and applications , 2000 .

[6]  Ting Xu,et al.  Visible-frequency asymmetric transmission devices incorporating a hyperbolic metamaterial , 2014, Nature Communications.

[7]  E. Ozbay,et al.  Asymmetric transmission of terahertz waves using polar dielectrics. , 2014, Optics express.

[8]  Nikolay I. Zheludev,et al.  A Roadmap for Metamaterials , 2011 .

[9]  Miguel Beruete,et al.  Wideband unidirectional transmission with tunable sign-switchable refraction and deflection in nonsymmetric structures , 2013 .

[10]  Ho-Jung Hwang,et al.  Focused ion beam technology and applications. , 1992 .

[11]  Jianxiong Li,et al.  Broadband diodelike asymmetric transmission of linearly polarized light in ultrathin hybrid metamaterial , 2014 .

[12]  H. Kikuta,et al.  Achromatic quarter-wave plates using the dispersion of form birefringence. , 1997, Applied optics.

[13]  Ying Wu,et al.  Silicon optical diode based on cascaded photonic crystal cavities. , 2014, Optics letters.

[14]  Yeshaiahu Fainman,et al.  Nonreciprocal Light Propagation in a Silicon Photonic Circuit , 2011, Science.

[15]  T. Gaylord,et al.  Formulation for stable and efficient implementation of the rigorous coupled-wave analysis of binary gratings , 1995 .

[16]  S. Chou,et al.  Nanoimprint Lithography , 2010 .

[17]  T. Szoplik,et al.  Asymmetric transmission of terahertz radiation through a double grating. , 2013, Optics letters.

[18]  W. Ye,et al.  One-way transmission of linearly polarized light in plasmonic subwavelength metallic grating cascaded with dielectric grating. , 2012, Optics letters.

[19]  Maria Farsari,et al.  Three-dimensional infrared metamaterial with asymmetric transmission , 2015 .

[20]  M. Wegener,et al.  Direct laser writing of three-dimensional photonic-crystal templates for telecommunications , 2004, Nature materials.

[21]  Qian-jin Wang,et al.  Asymmetric transmission and optical rotation of a quasi-3D asymmetric metallic structure. , 2014, Optics letters.

[22]  Yuhan Yao,et al.  Line width tuning and smoothening for periodical grating fabrication in nanoimprint lithography , 2015 .

[23]  Ekmel Ozbay,et al.  Experimental realization of a high-contrast grating based broadband quarter-wave plate. , 2012, Optics express.

[24]  Naoya Tate,et al.  Unidirectional light propagation through two-layer nanostructures based on optical near-field interactions , 2014 .

[25]  Carsten Rockstuhl,et al.  Advanced Jones calculus for the classification of periodic metamaterials , 2010, 1008.4117.

[26]  Mark L. Schattenburg,et al.  Large‐area achromatic interferometric lithography for 100 nm period gratings and grids , 1996 .

[27]  E. Ozbay,et al.  Highly asymmetric transmission of linearly polarized waves realized with a multilayered structure including chiral metamaterials , 2014 .

[28]  P. Wasylczyk,et al.  Highly asymmetric near infrared light transmission in an all-dielectric grating-on-mirror photonic structure. , 2015, Optics express.

[29]  Zongfu Yu,et al.  What is — and what is not — an optical isolator , 2013, Nature Photonics.