Nano Archive

Quantum dot microdrop laser

Schaefer, J. and Mondia, J. P. and Sharma, R. and Lu, Z. H. and Susha, A. S. and Rogach, A. L. and Wang, L. J. (2008) Quantum dot microdrop laser. NANO LETTERS, 8 (6). pp. 1709-1712.

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We report single-mode and multimode lasing from isolated spherical liquid microcavities containing CdSe/ZnS nanocrystal quantum dots. Lasing is observed at densities more than 2 orders of magnitude lower than previously demonstrated or theoretically predicted, assuming a uniform nanocrystal quantum dot distribution. Charged droplets, between 10 and 40 mu m in size, are electrodynamically levitated and optically pumped. Substantial laser signals at low thresholds are measured from the directional emission normal to the pump beam, owing to the high Q cavity modes.

Item Type:Article
Subjects:Physical Science > Nano objects
Physical Science > Quantum phenomena
Analytical Science > Beam methods
ID Code:6399
Deposited By:IoN
Deposited On:06 Aug 2009 14:43
Last Modified:06 Aug 2009 14:43

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