Subcycle optical microscopy with Angstrom-scale resolution

F. Schiegl, T. Siday, J. Hayes, P. Menden, V. Bergbauer, S. Nerreter, S. Lingl, J. Wilhelm, M. A. Huber, Y. A. Gerasimenko, R. Huber

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

We introduce a novel contrast mechanism in near-field microscopy which allows for all-optical atomic-scale microscopy with subcycle temporal resolution. To this end, we combine near-field microscopy with ultrahigh vacuum, low temperatures and sub-nanometer tip tapping amplitudes. On these scales, a surprisingly efficient non-classical near-field response occurs, which follows the vector potential of light and is strictly confined to atomic length scales. This ultrafast signal features an optical phase delay of ~π/2 and facilitates tracking of tunnelling dynamics. Our method reveals nanoscale defects and captures current transients on semiconducting van-der-Waals materials with subcycle sampling, allowing us to record the quantum flow of electrons in conductive and insulating quantum materials at ultimate spatiotemporal scales.

Original languageEnglish
Title of host publicationTerahertz Emitters, Receivers, and Applications XV
EditorsManijeh Razeghi, Mona Jarrahi
PublisherSPIE
Number of pages3
ISBN (Electronic)9781510679429
DOIs
Publication statusPublished - 1 Oct 2024
EventTerahertz Emitters, Receivers, and Applications XV 2024 - San Diego, United States
Duration: 18 Aug 202419 Aug 2024

Publication series

NameProceedings of SPIE, the International Society for Optical Engineering
PublisherSPIE
Volume13141
ISSN (Print)0277-786X
ISSN (Electronic)1996-756X

Conference

ConferenceTerahertz Emitters, Receivers, and Applications XV 2024
Country/TerritoryUnited States
CitySan Diego
Period18/08/2419/08/24

Bibliographical note

Publisher Copyright:
© 2024 SPIE.

Keywords

  • all-optical microscopy
  • atomic resolution
  • near field microscopy
  • subcycle resolution
  • terahertz
  • ultrafast nanoscopy
  • van-der-Waals materials

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering

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