Phase-shifted response of plasmonic nanostructures: Implications to luminescence upconversion

Khachatur V. Nerkararyan, Torgom S. Yezekyan, Sergey I. Bozhevolnyi*

*Corresponding author for this work

Research output: Contribution to journalJournal articleResearchpeer-review

117 Downloads (Pure)

Abstract

We analyze the dynamics of a quantum dipole emitter (QDE) illuminated by a resonant electromagnetic field and placed close to a metal nanostructure, whose response to the incident field is phase shifted by 3π/2 (-π/2). It is found that, due to the phase shift in a field scattered by the nanostructure (and acting on the QDE along with the incident field), QDE dynamics is characterized by a fast QDE transition to the excited state followed by relaxation to a stable superposition (of the excited and ground states) with a close to 1 probability of the QDE to be found in the excited state. We further argue that this effect can advantageously be used for luminescence upconversion enhancement when being realized for a lower excited state in the energy transfer upconversion process since, by largely eliminating the radiative relaxation channel, the probability of excitation transfer will be increased.

Original languageEnglish
JournalJournal of Luminescence
Volume192
Pages (from-to)595-598
ISSN0022-2313
DOIs
Publication statusPublished - 2017

Keywords

  • Fluorescence
  • Luminescence
  • Luminescence upconversion
  • Quantum plasmonics
  • Surface plasmons

Fingerprint

Dive into the research topics of 'Phase-shifted response of plasmonic nanostructures: Implications to luminescence upconversion'. Together they form a unique fingerprint.

Cite this