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  4. Surface-Plasmon-Induced Modification on the Spontaneous Emission Spectrum via Subwavelength-Confined Anisotropic Purcell Factor
 
research article

Surface-Plasmon-Induced Modification on the Spontaneous Emission Spectrum via Subwavelength-Confined Anisotropic Purcell Factor

Gu, Ying
•
Wang, Luojia
•
Ren, Pan
Show more
2012
Nano Letters

The mechanism of using the anisotropic Purcell factor to control the spontaneous emission linewidths in a four-level atom is theoretically demonstrated; if the polarization angle bisector of the two dipole moments lies along the axis of large/small Purcell factor, destructive/constructive interference narrows/widens the fluorescence center spectral lines. Large anisotropy of the Purcell factor, confined in the subwavelength optical mode volume, leads to rapid spectral line narrowing of atom approaching a metallic nanowire, nanoscale line width pulsing following periodically varying decay rates near a periodic metallic nanostructure, and dramatic modification on the spontaneous emission spectrum near a custom-designed resonant plasmon nanostructure. The combined system opens a good perspective for applications in ultracompact active quantum devices.

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Type
research article
DOI
10.1021/nl300655n
Web of Science ID

WOS:000303696400055

Author(s)
Gu, Ying
Wang, Luojia
Ren, Pan
Zhang, Junxiang
Zhang, Tiancai
Martin, Olivier J. F.  
Gong, Qihuang
Date Issued

2012

Publisher

American Chemical Society (ACS)

Published in
Nano Letters
Volume

12

Start page

2488

End page

2493

Subjects

Surface plasmon

•

spontaneous emission

•

Purcell factor

•

quantum emitter

•

quantum interference

•

Quantum Interference

•

Fluorescence

•

Generation

•

Dots

•

Atom

•

Enhancement

•

Scattering

•

Films

•

Decay

•

Field

Editorial or Peer reviewed

REVIEWED

Written at

EPFL

EPFL units
NAM  
Available on Infoscience
June 1, 2012
Use this identifier to reference this record
https://infoscience.epfl.ch/handle/20.500.14299/81221
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