Phase control of plasmon enhanced two-photon photoluminescence in resonant gold nanoantennas
Artikel i vetenskaplig tidskrift, 2018
Plasmonic nanoantennas emit two-photon photoluminescence, which is much stronger than their second harmonic generation. Unfortunately, luminescence is an incoherent process and therefore generally not explored for nanoscale coherent control of the antenna response. Here, we demonstrate that, in resonant gold nanoantennas, the two-photon absorption process can be coherent, provided that the excitation pulse duration is shorter than the dephasing time of plasmon mode oscillation. Exploiting this coherent response, we show the pure spectral phase control of resonant gold nanoantennas, with effective read-out of the two-photon photoluminescence.
Författare
Vikas Remesh
Barcelona Institute of Science and Technology (BIST)
Michael Stührenberg
Chalmers, Fysik, Bionanofotonik
Lisa Saemisch
Barcelona Institute of Science and Technology (BIST)
Nicolò Accanto
Barcelona Institute of Science and Technology (BIST)
Université Paris Descartes
Niek F. Van Hulst
Barcelona Institute of Science and Technology (BIST)
Institucio Catalana de Recerca i Estudis Avancats
Applied Physics Letters
0003-6951 (ISSN) 1077-3118 (eISSN)
Vol. 113 21 211101Ämneskategorier
Atom- och molekylfysik och optik
Annan fysik
Annan elektroteknik och elektronik
DOI
10.1063/1.5051381