Towards femtosecond electronics based on single-walled carbon nanotubes

C. Karnetzky, A. W. Holleitner

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

2 Scopus citations


To combine the advantages of ultrafast femtosecond optics with an on-chip communication scheme, optical signals with a frequency of several hundreds of THz need to be down-converted to coherent electronic signals of GHz or less. Here, we present an optoelectronic measurement scheme that allows for the direct read-out of ultrafast electronic nonequilibrium processes in nanoscale circuits. Particular, we demonstrate that photocurrents in single-walled carbon nanotubes (CNTs) under a resonant optical excitation of their subbands can be ballistic on subpicosecond timescales. The investigated semiconducting CNTs are integrated as functional parts of on-chip THz stripline circuits. In turn, the ballistic currents in the CNTs drive THz transients in the on-chip THz circuits with a bandwidth of up to 2 THz. The transients propagate within the striplines on a macroscopic, millimeter scale. Our results pave the way towards femtosecond on-chip electronics based on single-walled CNTs.

Original languageEnglish
Title of host publicationUltrafast Phenomena and Nanophotonics XXII
EditorsAbdulhakem Y. Elezzabi, Markus Betz
ISBN (Electronic)9781510615458
StatePublished - 2018
EventUltrafast Phenomena and Nanophotonics XXII 2018 - San Francisco, United States
Duration: 29 Jan 201831 Jan 2018

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
ISSN (Print)0277-786X
ISSN (Electronic)1996-756X


ConferenceUltrafast Phenomena and Nanophotonics XXII 2018
Country/TerritoryUnited States
CitySan Francisco


  • Ultrafast electronics
  • ballistic electron transport
  • nanoelectronics
  • single-walled carbon nanotubes


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