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

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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
Pages (from-to)595-598
Publication statusPublished - 2017


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


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