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Generalized transformation for nonmagnetic invisibility cloak with minimized scattering |
JOSA B, Vol. 28, Issue 4, pp. 922-928 (2011)
http://dx.doi.org/10.1364/JOSAB.28.000922
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Abstract
We propose a generalized transformation for a nonmagnetic invisibility cloak with minimized scattering. In comparison with the previous transformation, it has been demonstrated that the unphysical singularity at the inner boundary and the limitation of the thickness of the cloak shell can be removed by choosing the appropriate transformation function. Furthermore, our generalized transformation is used to design two different nonmagnetic cloaks without considering the unphysical singularity and the limitation of the thickness. Based on the effective medium theory, an alternating layered system composed of two isotropic materials is employed to realize these cloaks. Moreover, through calculating the scattering cross section of the cloak, it is found that such a nonmagnetic cloak can only work in a narrow frequency range.
© 2011 Optical Society of America
OCIS Codes
(160.1190) Materials : Anisotropic optical materials
(230.0230) Optical devices : Optical devices
(260.2110) Physical optics : Electromagnetic optics
(160.3918) Materials : Metamaterials
(260.2710) Physical optics : Inhomogeneous optical media
(230.3205) Optical devices : Invisibility cloaks
ToC Category:
Optical Devices
History
Original Manuscript: October 20, 2010
Revised Manuscript: January 19, 2011
Manuscript Accepted: February 14, 2011
Published: March 30, 2011
Citation
Lujun Huang, Daming Zhou, Jian Wang, Zhifeng Li, Xiaoshuang Chen, and Wei Lu, "Generalized transformation for nonmagnetic invisibility cloak with minimized scattering," J. Opt. Soc. Am. B 28, 922-928 (2011)
http://www.opticsinfobase.org/josab/abstract.cfm?URI=josab-28-4-922
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