Ontology highlight
ABSTRACT:
SUBMITTER: Hornett SM
PROVIDER: S-EPMC5115732 | biostudies-literature | 2016 Nov
REPOSITORIES: biostudies-literature
Hornett Samuel M SM Stantchev Rayko I RI Vardaki Martha Z MZ Beckerleg Chris C Hendry Euan E
Nano letters 20161018 11
Using a spatially structured, optical pump pulse with a terahertz (THz) probe pulse, we are able to determine spatial variations of the ultrafast THz photoconductivity with subwavelength resolution (75 μm ≈ λ/5 at 0.8 THz) in a planar graphene sample. We compare our results to Raman spectroscopy and correlate the existence of the spatial inhomogeneities between the two measurements. We find a strong correlation with inhomogeneity in electron density. This demonstrates the importance of eliminati ...[more]