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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Official URL: http://pubs.acs.org/doi/abs/10.1021/nl080661a
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.
|Subjects:||Physical Science > Nano objects|
Physical Science > Quantum phenomena
Analytical Science > Beam methods
|Deposited On:||06 Aug 2009 14:43|
|Last Modified:||06 Aug 2009 14:43|
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