Publication details

Invisible lenses with positive isotropic refractive index

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TYC Tomáš CHEN Huanyang DANNER Aaron James XU Yadong

Year of publication 2014
Type Article in Periodical
Magazine / Source Physical Review A
MU Faculty or unit

Faculty of Science

Field Optics, masers and lasers
Keywords invisible lens; ray tracing; Hankel functions; Gouy phase
Description We analyze the optical properties of the so-called invisible lenses in the wave-optics regime and show that they are practically invisible for a discrete set of frequencies. For other frequencies, the phase delay of the waves that pass through the lens compared to those that do not disturbs the outgoing waves. The frequencies for which the lens is invisible are influenced by the Gouy phase. This is the only known invisible device made of positive isotropic material at finite frequencies.
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