Active plasmon injection scheme for subdiffraction imaging with imperfect negative index flat lens

Abstract

We present an active physical implementation of the recently introduced plasmon injection loss compensation scheme for Pendry's non-ideal negative index flat lens in the presence of realistic material losses and signal-dependent noise. In this active implementation, we propose to use a physically convolved external auxiliary source for signal amplification and suppression of the noise in the imaging system. In comparison with the previous passive implementations of the plasmon injection scheme for sub-diffraction limited imaging, where an inverse filter post-processing is used, the active implementation proposed here allows for deeper subwavelength imaging far beyond the passive post-processing scheme by extending the loss compensation to even higher spatial frequencies.

13 pages, 15 figures

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Cited by in corpus (4)

• Enhanced superlens imaging with loss-compensating hyperbolic near-field spatial filter
• Hyperbolic metamaterial as a tunable near-field spatial filter for the implementation of the active plasmon injection loss compensation scheme
• Theory of coherent active convolved illumination for superresolution enhancement
• Experimental realization of the active convolved illumination imaging technique for enhanced signal-to-noise ratio