Ultrafast multi-terahertz nanoscopy with sub-cycle temporal resolution

摘要

We combine ultrafast multi-terahertz spectroscopy and near-field microscopy to achieve sub-wavelength spatial (∼15 nm) and sub-cycle temporal (∼9 fs) resolution. We apply our novel system to photoexcited InAs nanowires and resolve femtosecond carrier dynamics - spatially, temporally and spectrally.