Giant nonlocal lossless permittivity at optical frequencies

A. V. Goncharenko, V. U. Nazarov

Research output: Contribution to journalArticlepeer-review

2 Scopus citations


We show how to achieve a giant permittivity combined with negligible losses in both the visible and the near-IR for composites made of alternating layers of plasmonic and gain materials as the electric field is directed normally to the layers. The effects of nonlocality are taken into account that makes the method quite realistic. Solving the dispersion equation for eigenmodes of an infinite layered composite, we show that both propagating and nonpropagating modes can be excited, that leads to the realization of a giant nonlocal permittivity. Both phase and group velocities for the propagating eigenmode have been calculated showing that slow light can be achieved in the system under study. The results obtained open new possibilities for designing nanolaser, slow-light, superresolution imaging devices, etc.

Original languageAmerican English
Pages (from-to)20439-20449
Number of pages11
JournalOptics Express
Issue number16
StatePublished - 10 Aug 2015
Externally publishedYes

Bibliographical note

Publisher Copyright:
© 2015 Optical Society of America.


Dive into the research topics of 'Giant nonlocal lossless permittivity at optical frequencies'. Together they form a unique fingerprint.

Cite this