Journal
APPLIED PHYSICS LETTERS
Volume 97, Issue 10, Pages -Publisher
AMER INST PHYSICS
DOI: 10.1063/1.3488807
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- European Commission
- DFG
- State of Bavaria
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We report on whispering gallery mode lasing in electrically driven quantum dot micropillar cavities. The high quality microcavity structures feature whispering gallery mode emission with Q-factors up to 40 000 and laser threshold currents below 10 mu A for devices with diameters between 2.6 and 5.6 mu m. For large diameter micropillars a coexistence of lasing from two whispering gallery modes is realized which could be the basis for efficient terahertz generation via difference frequency generation. (C) 2010 American Institute of Physics. [doi:10.1063/1.3488807]
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