Quantum dot microdrop laser.
basic_science · Level V
Where this comes from
- Record sourced from PubMed, PMID 18471023.
- Also identified by DOI 10.1021/nl080661a.
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Abstract
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 microm 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.
Medical subject headings
- Lasers
- Quantum Dots