Terahertz isolator based on nonreciprocal magneto-metasurface.

A magneto-metasurface with nonreciprocal terahertz (THz) transmission has been proposed to form a THz isolator. Importantly, we have discussed the two necessary conditions for THz nonreciprocal transmission in the metasurface: (1) There should be magneto-optical responses for THz waves in the metasurface; (2) The transmission system of the metasurface needs to be asymmetric for forward and backward waves. These two conditions lead to the time reversal symmetry breaking of system, and the magnetoplasmon mode splitting and nonreciprocal resonance enhancement can be observed in the asymmetry magneto-metasurface. Moreover, the isolation dependences and tunability on the external magnetic field and temperature have also been investigated, which shows that the best operating state with a high isolation can be designed. The numerical simulations show a maximum isolation of 43 dB and a 10 dB operating bandwidth of 20 GHz under an external magnetic field of 0.3 T, and the insertion loss is smaller than 1.79 dB. This low-loss, high isolation, easy coupling THz isolator has broadly potentials for THz application systems.

[1]  Bo O. Zhu,et al.  Graphene based tunable metamaterial absorber and polarization modulation in terahertz frequency. , 2014, Optics express.

[2]  Qi Jie Wang,et al.  Magneto-plasmonics in graphene-dielectric sandwich. , 2014, Optics express.

[3]  N. Zheludev,et al.  Giant kerr rotation enhancement in magneto-plasmonic metamaterials , 2014, 2014 Conference on Lasers and Electro-Optics (CLEO) - Laser Science to Photonic Applications.

[4]  Tie Jun Cui,et al.  Tunable ultrathin mantle cloak via varactor-diode-loaded metasurface. , 2014, Optics express.

[5]  T. Cui,et al.  Optically controlled background-free terahertz switching in chiral metamaterial. , 2014, Optics letters.

[6]  E. Pickwell‐MacPherson,et al.  High extinction ratio and low transmission loss thin-film terahertz polarizer with a tunable bilayer metal wire-grid structure. , 2014, Optics letters.

[7]  M. Beck,et al.  Superconducting complementary metasurfaces for THz ultrastrong light-matter coupling , 2013, 1311.0180.

[8]  Zhen Tian,et al.  A perfect metamaterial polarization rotator , 2013 .

[9]  Sai Chen,et al.  State conversion based on terahertz plasmonics with vanadium dioxide coating controlled by optical pumping. , 2013, Optics letters.

[10]  Sai Chen,et al.  Tunable nonreciprocal terahertz transmission and enhancement based on metal/magneto-optic plasmonic lens. , 2013, Optics express.

[11]  Tobias Steinle,et al.  Nonreciprocal plasmonics enables giant enhancement of thin-film Faraday rotation , 2013, Nature Communications.

[12]  Martin Koch,et al.  High-Q terahertz bandpass filters based on coherently interfering metasurface reflections. , 2013, Optics letters.

[13]  A. Kildishev,et al.  Planar Photonics with Metasurfaces , 2013, Science.

[14]  R. Morandotti,et al.  A magnetic non-reciprocal isolator for broadband terahertz operation , 2013, Nature Communications.

[15]  Qiaofeng Tan,et al.  Helicity dependent directional surface plasmon polariton excitation using a metasurface with interfacial phase discontinuity , 2013, Light: Science & Applications.

[16]  Broadband Faraday isolator. , 2012, Journal of the Optical Society of America. A, Optics, image science, and vision.

[17]  Fei Fan,et al.  Magnetically Tunable Terahertz Isolator Based on Structured Semiconductor Magneto Plasmonics , 2012, IEEE Photonics Technology Letters.

[18]  I. Al-Naib,et al.  Low-loss ultra-high-Q dark mode plasmonic Fano metamaterials. , 2012, Optics letters.

[19]  Fei Fan,et al.  Terahertz modulator based on insulator-metal transition in photonic crystal waveguide. , 2012, Applied optics.

[20]  Qi Jie Wang,et al.  Broadly tunable one-way terahertz plasmonic waveguide based on nonreciprocal surface magneto plasmons. , 2012, Optics letters.

[21]  Qianfan Xu,et al.  High-contrast terahertz modulator based on extraordinary transmission through a ring aperture. , 2011, Optics express.

[22]  Achanta Venu Gopal,et al.  Enhanced magneto-optical effects in magnetoplasmonic crystals. , 2011, Nature nanotechnology.

[23]  Chun Jiang,et al.  Nonreciprocal extraordinary optical transmission through subwavelength slits in metallic film. , 2011, Optics letters.

[24]  Zhan Guo,et al.  Magnetic photonic crystals for terahertz tunable filter and multifunctional polarization controller , 2011 .

[25]  Martin Koch,et al.  Terahertz metasurfaces with high Q-factors , 2011 .

[26]  Gennady Shvets,et al.  One-way extraordinary optical transmission and nonreciprocal spoof plasmons. , 2010, Physical review letters.

[27]  Shin Saito,et al.  Evidence of localized surface plasmon enhanced magneto-optical effect in nanodisk array , 2010 .

[28]  Daru Chen,et al.  A novel low-loss Terahertz waveguide: polymer tube. , 2010, Optics express.

[29]  Alfred Leitenstorfer,et al.  Active magneto-plasmonics in hybrid metal–ferromagnet structures , 2010 .

[30]  R. Camley,et al.  Nonreciprocal microwave devices based on magnetic nanowires , 2009 .

[31]  H. Kurz,et al.  Transmission of THz radiation through InSb gratings of subwavelength apertures. , 2005, Optics express.