Terahertz Cross-Correlation Spectroscopy and Imaging of Large-Area Graphene

Research output: Contribution to journalJournal articleResearchpeer-review

28 Downloads (Pure)


We demonstrate the use of a novel, integrated THz system to obtain time-domain signals for spectroscopy in the 0.1–1.4 THz range. The system employs THz generation in a photomixing antenna excited by a broadband amplified spontaneous emission (ASE) light source and THz detection with a photoconductive antenna by coherent cross-correlation sampling. We benchmark the performance of our system against a state-of-the-art femtosecond-based THz time-domain spectroscopy system in terms of mapping and imaging of the sheet conductivity of large-area graphene grown by chemical vapor deposition (CVD) and transferred to a PET polymer substrate. We propose to integrate the algorithm for the extraction of the sheet conductivity with the data acquisition, thereby enabling true in-line monitoring capability of the system for integration in graphene production facilities.

Original languageEnglish
Article number3297
Issue number6
Number of pages12
Publication statusPublished - Mar 2023


  • Graphene
  • THz cross-correlation spectroscopy
  • THz quasi-time-domain spectroscopy
  • THz time-domain spectroscopy


Dive into the research topics of 'Terahertz Cross-Correlation Spectroscopy and Imaging of Large-Area Graphene'. Together they form a unique fingerprint.

Cite this