Second-harmonic generation imaging of semiconductor nanowires with focused vector beams
Research output: Contribution to journal › Article › Scientific › peer-review
|Number of pages||6|
|Publication status||Published - 6 Feb 2015|
|Publication type||A1 Journal article-refereed|
We use second-harmonic generation (SHG) with focused vector beams to investigate individual vertically aligned GaAs nanowires. Our results provide direct evidence that SHG from oriented nanowires is mainly driven by the longitudinal field along the nanowire growth axis. Consequently, focused radial polarization provides a superior tool to characterize such nanowires compared to linear polarization, also allowing this possibility in the native growth environment. We model our experiments by describing the SHG process for zinc-blende structure and dipolar bulk nonlinearity.
ASJC Scopus subject areas
- modeling, nonlinear imaging, radial polarization, Second-harmonic generation, semiconductor