Power drainage and energy dissipation in lossy but perfect lenses
| Autor: | Meir Orenstein, Gilad Rosenblatt |
|---|---|
| Rok vydání: | 2017 |
| Předmět: |
Physics
Superlens business.industry Metamaterial Astrophysics::Cosmology and Extragalactic Astrophysics Dissipation Lossy compression 01 natural sciences law.invention Power (physics) 010309 optics Lens (optics) Energy conservation Fisheye lens Optics law 0103 physical sciences 010306 general physics business |
| Zdroj: | Physical Review A. 95 |
| ISSN: | 2469-9934 2469-9926 |
| DOI: | 10.1103/physreva.95.053857 |
| Popis: | It has recently been shown that passive lens designs can retain perfect lensing despite intrinsic loss in the comprising left-handed materials. Here we show that energy conservation is not at odds with the operation of such lossy perfect lenses: The irreversible transfer of electromagnetic power to the lossy material dictates that a smaller portion of the power emitted by the source arrives at the image, but image fidelity remains absolute. Moreover, the power that does arrive at the perfect image must drain from the system there. This is shown to apply to any layered perfect lens based on left-handed media, including the well-known Veselago lens. Combined with what is known about Maxwell's fisheye lens, our results suggest that power drainage is universal to all perfect lenses and is intrinsic to any perfect image. Properly addressing this unique power dynamics is therefore essential to any successful realization of practical perfect lenses with existing metamaterials. |
| Databáze: | OpenAIRE |
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