Open AccessLight emission rate enhancement from InP MQW by plasmon nano-antenna arrays
Author(s) -
D. Arbel,
Nikolai Berkovitch,
Amir Nevet,
Andrea Peer,
Shimon Cohen,
D. Ritter,
Meir Orenstein
Publication year - 2011
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.19.009807
Subject(s) - spontaneous emission , plasmon , optoelectronics , materials science , wavelength , optics , surface plasmon resonance , surface plasmon , quantum efficiency , radiative transfer , antenna (radio) , purcell effect , nano , quantum well , resonance (particle physics) , laser , physics , nanotechnology , nanoparticle , telecommunications , atomic physics , computer science , composite material
Arrays of gold single-strip and double-strip nano-antennas, with resonance in the wavelength range of 1200-1600 nm, were fabricated on the top of InGaAs/InP multi quantum well structure. Photo-luminescence from the quantum-wells was measured and shown to be enhanced by a factor of up to 9, with maximum enhancement wavelength corresponding to the nano-antennas resonance. Emission enhancement is attributed to the coupling of emitting charge-carriers to the plasmonic nano-antennas, causing an estimated increase in the radiative recombination rate by a factor of ~25, thus making it dominant over non-radiative recombination. This effect will enable fast modulation of InP-based nano-emitters spontaneously emitting at telecom-wavelength.