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Plasmonic induced transparency in graphene oxide quantum dots
Author(s): Meg Mahat; Yuri Rostovtsev; Sanjay Karna; Francis D'Souza; Arup Neogi
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Paper Abstract

The absorption due to phonon vibrations in graphene oxide quantum dots (GO-QDs) has been modified by localized plasmons induced by Ag nanoparticles (NPS). The interference of phonons and plasmons results in coherent interaction that leads to the formation of "dark states" and "coherent population trapping" related to Fano like effect. The localized electric field effectively drives the phonons which in turn modifies the coherent interaction in exciton absorption states of graphene oxide. A quantum optical theory is used to qualitatively explain the differential absorption spectra measured using pump-probe spectroscopy demonstrating the formation of dark states.

Paper Details

Date Published: 21 February 2018
PDF: 8 pages
Proc. SPIE 10543, Quantum Dots and Nanostructures: Growth, Characterization, and Modeling XV, 105430N (21 February 2018); doi: 10.1117/12.2291084
Show Author Affiliations
Meg Mahat, Univ. of North Texas (United States)
Yuri Rostovtsev, Univ. of North Texas (United States)
Sanjay Karna, Univ. of North Texas (United States)
Francis D'Souza, Univ. of North Texas (United States)
Arup Neogi, Univ. of North Texas (United States)


Published in SPIE Proceedings Vol. 10543:
Quantum Dots and Nanostructures: Growth, Characterization, and Modeling XV
Diana L. Huffaker; Holger Eisele, Editor(s)

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