title: Surface enhanced anti-Stokes one-photon luminescence from single gold nanorods.
abstract: Anti-Stokes one-photon luminescence from a single gold nanorod is experimentally investigated. The anti-Stokes emission of gold nanorods is enhanced and strongly modulated by localized surface plasmon resonance (LSPR). It is found that the polarization dependence of the anti-Stokes emission is in strong correlation with that of the Stokes emission. Further experiments provide evidence that LSPR significantly enhanced both excitation and emission processes. Moreover, the line shape of the anti-Stokes emission is dependent on the surface temperature, which is related to the distribution of free electrons near the Fermi level. This discovery provides an effective method in principle to probe localized temperature at nanoscale dimension. Here, the reported results about the anti-Stokes emission provide more understanding for the photoemission process from the plasmonic nanostructures.
authors.affiliation: State Key Laboratory for Mesoscopic Physics, Department of Physics, Peking University, Beijing 100871, China. guowei.lu@pku.edu.cn xiakeyu@gmail.com.
authors.forename: Yingbo
authors.initials: Y
authors.lastname: He
authors.forename: Keyu
authors.initials: K
authors.lastname: Xia
authors.forename: Guowei
authors.initials: G
authors.lastname: Lu
authors.forename: Hongming
authors.initials: H
authors.lastname: Shen
authors.forename: Yuqing
authors.initials: Y
authors.lastname: Cheng
authors.forename: Yong-chun
authors.initials: YC
authors.lastname: Liu
authors.forename: Kebin
authors.initials: K
authors.lastname: Shi
authors.forename: Yun-Feng
authors.initials: YF
authors.lastname: Xiao
authors.forename: Qihuang
authors.initials: Q
authors.lastname: Gong