The Effect of Antenna Movement and Material Properties on Electromagnetically Induced Transparency in a Two-Dimensional Metamaterials
محورهای موضوعی : فصلنامه نانوساختارهای اپتوالکترونیکیMojtaba Servatkhah 1 , Hadi Alaei 2
1 - Department of Physics, Marvdasht Branch, Islamic Azad University, Marvdasht, Iran
2 - Department of Physics, Marvdasht Branch, Islamic Azad University, Marvdasht, Iran.
کلید واژه: Electromagnetically Induced Transparency, Metamaterials, Breaking Geometric Symmetry, Slow Light,
چکیده مقاله :
Increasing development of nano-technology in optics and photonics by using modern methods of light control in waveguide devices and requiring miniaturization and electromagnetic devices such as antennas, transmission and storage as well as improvement in the electromagnetic tool, have led researchers to use the phenomenon of electromagnetically induced transparency (EIT) and similar phenomena in metamaterials. In this work, we introduce a metamaterial structure in nanometer dimensions and THz frequency region. Moreover, by broking the geometrical symmetry structure, we offer EIT with high transmittance and more Q-factor in comparison, to our knowledge, with previous studies of two-dimensional structure, in the infrared region. These achievements can be a good choice for slow light applications and can be used to amplify light in nanostructure and also to detect the infrared light. Finally, we study the effect of changing the metal on the proposed metamaterial. Moreover, in this study, numerical calculations and simulations are done by FDTD methodphenomenon of electromagnetically induced transparency (EIT) and similar phenomena in metamaterials. In this work, we introduce a metamaterial structure in nanometer dimensions and THz frequency region. Moreover, by broking the geometrical symmetry structure, we offer EIT with high transmittance and more Q-factor in comparison, to our knowledge, with previous studies of two-dimensional structure, in the infrared region. These achievements can be a good choice for slow light applications and can be used to amplify light in nanostructure and also to detect the infrared light. Finally, we study the effect of changing the metal on the proposed metamaterial. Moreover, in this study, numerical calculations and simulations are done by FDTD method.
[1] M. Fleischhauer, A. Imamoglu, and J. P. Marangos, Electromagnetically induced transparency: optics in coherent media, Rev. Mod. Phys. 77 (2005) 633–673.
[2] N. Papasimakis, V. A. Fedotov, N. I. Zheludev, and S. L.Prosvirnin, Metamaterial analog of electromagnetically induced transparency, Phys. Rev. Lett. 101 (2008) 253903.
[3] M. D. Lukin, S. F. Yelin, and M. Fleischhauer, Entanglement of atomic ensembles by trapping correlated photon states, Phys. Rev. Lett. 84 (2000) 4232.
[4] S. E. Harris and L. V. Hau, Nonlinear optics at low light levels, Phys. Rev. Lett. 82 (1999) 4611.
[5] L. V. Hau, S. E. Harris, Zachary Dutton and Cyrus H. Behroozi, Light speed reduction to 17 metres per second in an ultracold atomic gas, Nature 397, 6720 (1999) 594-598.
[6] N. Liu, Plasmonic analogue of electromagnetically induced transparency at the Drude damping limit, Nature materials 8, 9 (2009) 758-762.
[7] P. Tassin, Planar designs for electromagnetically induced transparency in metamaterials, Optics express 17, 7 (2009) 5595-5605.
[8] Z. Lei, Large group delay in a microwave metamaterial analog of electromagnetically induced transparency, Applied Physics Letters 97.24 (2010) 241904.
[9] N., Papasimakis, Metamaterial with polarization and direction insensitive resonant transmission response mimicking electromagnetically induced transparency, Applied Physics Letters 94, 21 (2009) 211902.
[10] E. O., Kamenetskii, G. Vaisman, and R. Shavit. Fano-resonance spectra in microwave structures with magnetostatic-magnon particles, Session 1P8 SC3&4: Fano Resonances in Microwaves and Optics: Physics and Application (2013) 330.
