Abstract
Low threshold, frequency-upconverted lasing in the two-photon absorption regime was observed in hexagonal ZnO nanodisks. Upon near-IR excitation, the ZnO nanodisk resonators produced UV laser emission with a remarkably low threshold (∼1 mJ/cm2) as well as a resolved lasing linewidth of ∼0.1 nm. Modal analysis and far-field photoluminescence imaging of the nanolasers have suggested the dominance of whispering-gallery modes in the two-photon pumped microcavity lasing process.
Original language | English (US) |
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Pages (from-to) | 3349-3351 |
Number of pages | 3 |
Journal | Optics Letters |
Volume | 34 |
Issue number | 21 |
DOIs | |
State | Published - Nov 1 2009 |
All Science Journal Classification (ASJC) codes
- Atomic and Molecular Physics, and Optics