Abstract
We study different emission regimes in close-packed films of chemically synthesized CdSe nanoparticles [nanocrystal quantum dots (NQDs)]. We observe that the NQD photoluminescence is dominated by excitons and biexcitons, respectively, before and after the threshold for stimulated emission. Furthermore, we demonstrate the regime of microring lasing into sharp, whispering-gallery modes using NQD solids incorporated into microcapillary tubes. This result indicates a feasibility of miniature, solid-state laser devices based on chemically synthesized NQDs.
Original language | English |
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Pages (from-to) | 1303-1305 |
Number of pages | 3 |
Journal | Applied Physics Letters |
Volume | 81 |
Issue number | 7 |
DOIs | |
Publication status | Published - Aug 12 2002 |
ASJC Scopus subject areas
- Physics and Astronomy (miscellaneous)