Artifact Free Transient Near-Field Nanoscopy
Abstract
We report on the first implementation of ultrafast near field nanoscopy carried out with the transient pseudoheterodyne detection method (Tr-pHD). This method is well suited for efficient and artifact free pump-probe scattering-type near-field optical microscopy with nanometer scale resolution. The Tr-pHD technique is critically compared to other data acquisition methods and found to offer significant advantages. Experimental evidence for the advantages of Tr-pHD is provided in the Near-IR frequency range. Crucial factors involved in achieving proper performance of the Tr-pHD method with pulsed laser sources are analyzed and detailed in this work. We applied this novel method to time-resolved and spatially resolved studies of the photo-induced effects in the insulator-to-metal transition system vanadium dioxide with nanometer scale resolution.
Keywords
Cite
@article{arxiv.1706.08478,
title = {Artifact Free Transient Near-Field Nanoscopy},
author = {Aaron Sternbach and James Hinton and Tetiana Slusar and Alexander Swinton McLeod and Mengkun Liu and Alex Frenzel and Martin Wagner and Ruben Iraheta and Fritz Keilmann and Alfred Leitenstorfer and Michael Fogler and Hyun-Tak Kim and Richard Averitt and Dimitri Basov},
journal= {arXiv preprint arXiv:1706.08478},
year = {2017}
}
Comments
37 pages, 6 figures