Analysis on the imaging properties of a left-handed material slab

Details Analysis on the imaging properties of a left-handed material slab Analysis on the imaging properties of a left-handed material slab

2003-11-25

arxiv.org/abs/physics/0311122v2

Physics

Optics

4 pages tex file, 2 jpeg figures

Scientific paper

We investigate in this paper the imaging properties of an absorptive left-handed material (LHM) slab. For a line source, a geometric explanation to the reason of the thickness limitation on an ideal slab is given. For a lossy slab, the imaging properties are determined by the wavelength, the slab thickness, the distance from the source to the nearer boundary of the slab, and the absorption effect. Varying the ratios between these quantities, the image width can be changed from wavelength to subwavelength scale. In the former situation, the energy density is mainly concentrated at the two image spots. In the later case, though image of subwavelength width appears on the focal plane, however, most energy is located at about the two boundaries of the slab, and beyond the boundaries the wave amplitude decays exponentially. The relations between the subwavelength imaging and uncertainty principle is also discussed.

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