Frequency-upconverted whispering-gallery-mode lasing in ZnO hexagonal nanodisks

Chunfeng Zhang, Fan Zhang, Xiao Wei Sun, Yi Yang, Jian Wang, Jian Xu

Research output: Contribution to journalArticlepeer-review

24 Scopus citations


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 languageEnglish (US)
Pages (from-to)3349-3351
Number of pages3
JournalOptics Letters
Issue number21
StatePublished - Nov 1 2009

All Science Journal Classification (ASJC) codes

  • Atomic and Molecular Physics, and Optics


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