Broadband enhancement and inhibition of single quantum dot emission in plasmonic nano-cavities operating at telecommunications wavelengths

David Elvira (1) , Remy Braive (1) , Grégoire Beaudoin (1) , Isabelle Sagnes (1) , Jean-Paul Hugonin (2) , Izo Abram (1) , Isabelle Robert-Philip (1) , Philippe Lalanne (3) , Alexios Beveratos (1)

1 LPN - Laboratoire de photonique et de nanostructures
2 Laboratoire Charles Fabry / Naphel
3 lp2n-03,lp2n-13

A plasmonic microcavity providing broadband control of spontaneous emission for large and sparse semiconductor quantum dots emitting at telecommunications wavelengths is proposed. By designing and fabricating such a cavity, we demonstrate a broadband Purcell effect with spontaneous emission enhancement over a broad spectral range of Dk ’ 20nm with a 3.9-fold maximum enhancement, as well as inhibition over Dk ’ 100 nm around 1.3 lm. The broadband feature relaxes the constraint on spectral matching between the dot emission and the cavity mode, favourable for implementing efficient non-classical light sources or nanoscale lasers.

Domains: Engineering Sciences [physics]; Optics / Photonic; Physics [physics]; Physics [physics]; Optics [physics.optics]

David Elvira, Remy Braive, Grégoire Beaudoin, Isabelle Sagnes, Jean-Paul Hugonin, et al.. Broadband enhancement and inhibition of single quantum dot emission in plasmonic nano-cavities operating at telecommunications wavelengths. Applied Physics Letters, 2013, 103, pp.061113. ⟨10.1063/1.4818131⟩. ⟨hal-00859960⟩