title: Light-matter interaction and polarization of single ZnO nanowire lasers.
abstract: The optical properties of single zinc oxide (ZnO) nanolasers are investigated. ZnO nanowires with different diameters and lengths are prepared by chemical vapor transport. The diameter plays an important role in the stimulated emission process in nanowires. The spectral shift and spacing of Fabry-Pérot-type modes imply a strong light-matter interaction in the lasing nanowires, which is explained by the exciton-polariton model. The polarization of the electric field in the lasing nanowires is perpendicular to the long axis of the nanowire and parallel to the substrate plane. The coexistence of the transverse modes is distinguished by decomposing the peak shape and the degree of polarization. In addition to the transverse mode of the lasing with the polarization parallel to the substrate plane, the lasing mode with the polarization perpendicular to the substrate plane is observed.
authors: Department of Chemistry, Kyung Hee University, Seoul 130-701, Korea.
authors: Noh Soo
authors: NS
authors: Han
authors: Hyeong Seop
authors: HS
authors: Shim
authors: Seulki
authors: S
authors: Lee
authors: Seung Min
authors: SM
authors: Park
authors: Myong Yong
authors: MY
authors: Choi
authors: Jae Kyu
authors: JK
authors: Song