Journal
OPTICAL MATERIALS EXPRESS
Volume 1, Issue 6, Pages 1077-1089Publisher
OPTICAL SOC AMER
DOI: 10.1364/OME.1.001077
Keywords
-
Categories
Funding
- National Science Foundation (NSF)-CMMI [1101074]
- European Commission [NMP -2008-2.2-2, 228762]
- Sigma Xi
- Scientific Research Society
- SPIE
- Directorate For Engineering
- Div Of Civil, Mechanical, & Manufact Inn [1101074] Funding Source: National Science Foundation
Ask authors/readers for more resources
We report on the possibility of adopting active gain materials (specifically, made of fluorescent dyes) to mitigate the losses in a 3D periodic array of dielectric-core metallic-shell nanospheres. We find the modes with complex wavenumber in the structure, and describe the composite material in terms of homogenized effective permittivity, comparing results from modal analysis and Maxwell Garnett theory. We then design two metamaterials in which the epsilon-near-zero frequency region overlaps with the emission band of the adopted gain media, and we show that metamaterials with effective parameters with low losses are feasible, thanks to the gain materials. Even though fluorescent dyes embedded in the nanoshells' dielectric cores are employed in this study, the formulation provided is general, and could account for the usage of other active materials, such as semiconductors and quantum dots. (C) 2011 Optical Society of America
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available