School of Science，Nantong University，Nantong，226019，China
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Published
2017-08-02
Issue Date
2017-08-02
Abstract
In this paper，we constructed a dissipative uniaxial anisotropic metamaterial，in which the components of the permittivity and the permeability tensor were varying with the frequency.Then，the effective negative refractive index of the uniaxial anisotropic metamaterial，and the Goos－Hnchen(GH)shift on the surface of anisotropic quasi－left－handed meterial was studied in detail.The expressions of GH shift and penetration depth were given for transverse electric(TE)and transverse magnetic(TM)incident wave.The numerical simulation of the TE incident wave shows that the anisotropic metamaterial can be the quasi－left－handed material with negative refractive index(NI－QLHM)as the frequency is between 4 GHz and 6 GHz for μz<0(i.e.，the relative permeability of the uniaxial material parallel to the optical axial is negative)．Moreover，the smaller of the permeability component |μz|，the easier to realize the total reflection in the frequency region of the NI－QLHM.And with increasing the frequency，the critical angle decreases，thus the region of incident angle corresponding to the total reflection increases，which leads to the decrease of the effective refractive index of the NI－QLHM.In what follows，we investigated the GH shifts and the penetration depth of the NI－QLHM.The penetration depth corresponds with the GH shifts，generally，the larger the penetration depth is，the greater the GH shifts are.Meanwhile，the GH shifts of the NI－QLHM are always negative，which is contrary to the ordinary material and is the unique physical property of the NI－QLHM.In the end，the influences of the frequency and the incident angle on the GH shifts and the penetration depth were discussed.The numerical results show that with increasing the frequency，the GH shifts decrease for the same of the incident angle，which means that with decreasing the refractive index，the GH shifts also decrease.It can be concluded that the negative GH shifts can be adjusted by changing the frequency and the angle of incidence
Huang Yanyan，Yu Zhongwei*，Ji Zhengyuan，Qian Yingjia.
The Goos－Hnchen shift on the surface of anisotropic metamaterials[J]. Journal of Nanjing University(Natural Sciences), 2017, 53(4): 708
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References
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