Open AccessSingle quantum dot controlled lasing effects in high-Q micropillar cavities
Author(s) -
Stephan Reitzenstein,
C. Böckler,
A. V. Bazhenov̇,
A. V. Gorbunov,
Andreas Löffler,
M. Kamp,
V. D. Kulakovskiĭ,
A. Forchel
Publication year - 2008
Publication title -
optics express
Language(s) - Uncategorized
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.16.004848
Subject(s) - lasing threshold , quantum dot , resonance (particle physics) , laser , quantum dot laser , exciton , optics , excitation , photon , physics , optoelectronics , materials science , atomic physics , quantum well , condensed matter physics , quantum mechanics
Lasing effects based on individual quantum dots have been investigated in optically pumped high-Q micropillar cavities. We demonstrate a lowering of the threshold pump power from a off-resonance value of 37 microW to 18 microW when an individual quantum dot exciton is on-resonance with the cavity mode. Photon correlation studies below and above the laser threshold confirm the single dot influence. At resonance we observe antibunching with g((2))(0) = 0.36 at low excitation, which increases to 1 at about 1.5 times the threshold. In the off-resonant case, g((2))(0) is about 1 below and above threshold.