Journal
OPTICS EXPRESS
Volume 16, Issue 7, Pages 4848-4857Publisher
OPTICAL SOC AMER
DOI: 10.1364/OE.16.004848
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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 mu W to 18 mu W 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. (c) 2008 Optical Society of America.
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