Effects of the finite size of a left-handed material slab to the image quality and some unusual phenomena
Abstract
The characteristics of an imaging system formed by a left-handed material (LHM) slab of finite length are studied, and the influence of the finite length of the slab on the image quality is analyzed. Unusual phenomena such as surface bright spots and negative energy stream at the image side are observed and explained as the effects of a lateral resonance of surface polaritons excited by the evanescent components of the incident field. For a thin LHM slab, the resonant effects are found rather sensitive to the length of the slab, and the bright spots on the bottom surface of the slab may stretch to the image plane and degrade the image quality.Keywords
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