Fabrication and tuning of plasmonic optical nanoantennas around droplet epitaxy quantum dots by cathodoluminescence

Gilles Nogues (1) , Quentin Merotto (1) , Guillaume Bachelier (2) , Eun Hye Lee (3) , Jin Dong Song (3)

1 NEEL - NPSC - Nanophysique et Semiconducteurs
2 NEEL - NOF - Nano-Optique et Forces
3 KIST - Center for Opto-Electronic Convergence Systems, Korea Institute of Science and Technology

We use cathodoluminescence to locate droplet epitaxy quantum dots with a precision ≲50 nm before fabricating nanoantennas in their vicinity by electron-beam lithography. Cathodoluminescence is further used to evidence the effect of the antennas as a function of their length on the light emitted by the dot. Experimental results are in good agreement with numerical simulations of the structures.

Mots clés: antennas; cathodoluminescence; drops; electron beam lithography; nanophotonics; numerical analysis; plasmonics; quantum dots

Domaines: Optique [physics.optics]

Gilles Nogues, Quentin Merotto, Guillaume Bachelier, Eun Hye Lee, Jin Dong Song. Fabrication and tuning of plasmonic optical nanoantennas around droplet epitaxy quantum dots by cathodoluminescence. Applied Physics Letters, 2013, 102, pp.231112. ⟨10.1063/1.4809831⟩. ⟨hal-00833154⟩