Perfect imaging without refraction?

Details Perfect imaging without refraction? Perfect imaging without refraction?

Dec 2011

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2011njph...13l5006b&link_type=abstract

New Journal of Physics, Volume 13, Issue 12, pp. 125006 (2011).

Physics

Scientific paper

Recent work suggesting that ‘perfect’ far-field imaging is possible using Maxwell's fish-eye lens (Leonhardt 2009 New J. Phys. 11 093040) has raised a number of questions and controversies about the nature of imaging and field localization in inhomogeneous media. In this brief paper we present analogous results for a purely reflector-based imaging system—an elliptical cavity. With a source at one focus of the ellipse we show that sub-wavelength field localization can be achieved at the other focus when an active ‘drain’ is present there, but not without it. Does this show that far-field ‘perfect’ imaging is possible even without refraction (negative or positive)? Unfortunately not, giving further evidence that these are solely drain-induced effects.

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