Gain induced optical transparency in metamaterials

被引：45

作者：

Strangi, G. ^{[1
]}

De Luca, A. ^{[1
]}

Ravaine, S. ^{[2
]}

Ferrie, M. ^{[2
]}

Bartolino, R. ^{[2
]}

机构：

[1] Univ Calabria, Dept Phys, Licryl CNR IPCF, CEMIF CAL Ctr Excellence Italian Minister Res MIU, I-87036 Arcavacata Di Rende, Italy

[2] Univ Bordeaux 1, Ctr Rech Paul Pascal, F-33600 Pessac, France

来源：

APPLIED PHYSICS LETTERS | 2011年 / 98卷 / 25期

关键词：

dyes; gold; metamaterials; nanoparticles; optical losses; plasmonics; radiation quenching; Rayleigh scattering; transparency; PARTICLES;

D O I：

10.1063/1.3599566

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

We demonstrate that fluorophores coupled to plasmonic nanoparticles promote resonant excitation energy transfer processes leading to low-loss building block metamaterials. Experimental observations of Rayleigh scattering enhancement, accompanied by an increase in transmission as function of the gain, clearly reveal optical loss compensation effects. Fluorescence quenching is also observed in gain assisted nanoparticles owing to the increase in nonradiative decay rate triggered by plasmonic resonances. The gain induced transparency at optical frequencies is an unambiguous consequence of loss reduction in metamaterial subunits, representing a promising step to enable a wide range of electromagnetic properties of optical metamaterials. (C) 2011 American Institute of Physics. [doi:10.1063/1.3599566]

引用

页数：3

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