Local field contribution to the optical properties of multilevel coherent atomic media
2007 (English)In: Annalen der Physik, ISSN 0003-3804, E-ISSN 1521-3889, Vol. 16, no 5-6, 364-378 p.Article in journal (Refereed) Published
The local field contribution to some three- and four-level coherent atomic vapors is considered, and a significant modification to optical properties due to dipole-dipole interaction between neighboring atoms is discussed. It is found that the local field effect can reduce loss of a four-level N-type vapor medium at the resonant frequency in both the steady and transient cases. In order to achieve a left-handed medium with a negative refractive index, a scenario to realize simultaneously negative permittivity and permeability inside a mixed coherent atomic vapor by using quantum coherence effect is suggested. One of the remarkable features of the present scheme is such that it can lead to a controllable manipulation of negative refractive index of an atomic vapor by using external coupling and signal fields. This may be a new scheme to fabricate the negatively refracting materials based on quantum optical approach.
Place, publisher, year, edition, pages
2007. Vol. 16, no 5-6, 364-378 p.
local field contribution; multilevel atomic vapors; left-handed medium; negative permittivity and permeability
Electrical Engineering, Electronic Engineering, Information Engineering
IdentifiersURN: urn:nbn:se:kth:diva-10068DOI: 10.1002/andp.200510242ISI: 000247941000005ScopusID: 2-s2.0-34547154329OAI: oai:DiVA.org:kth-10068DiVA: diva2:202619
QC 201008102009-03-102009-03-102013-11-19Bibliographically approved