Microstadium single-nanowire laser

Hong Gyu Park, Fang Qian, Carl J. Barrelet, Yat Li

Research output: Contribution to journalArticlepeer-review

33 Citations (Scopus)


We report room-temperature lasing in an optically pumped single-nanowire stadium microresonator. The photoluminescence from a chemically synthesized GaN nanowire is coupled and confined in a silicon-nitride stadium microcavity. Photoluminescence spectroscopy exhibits lasing at 372 nm with a lasing threshold of 1536 kW cm2. We compute a Q factor of ∼3500 for the microstadium single-nanowire structure using finite-difference time-domain simulation. The successful demonstration of this hybrid structure using bottom-up and top-down approaches represents a significant step toward high-density integration of functional building blocks for an ultracompact nanophotonic circuit.

Original languageEnglish
Article number251115
JournalApplied Physics Letters
Issue number25
Publication statusPublished - 2007

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)


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