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

Bjørn Hübschmann Mølvig; Thorsten Bæk; Jie Ji; Peter Bøggild; Simon Jappe Lange; Peter Uhd Jepsen

doi:10.3390/s23063297

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

Bjørn Hübschmann Mølvig (Corresponding author)
, Thorsten Bæk
, Jie Ji
, Peter Bøggild
, Simon Jappe Lange
, Peter Uhd Jepsen (Corresponding author)

Research output: Contribution to journal › Article › Academic › peer-review

15 Citations (Scopus)

Abstract

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 language	English
Article number	3297
Journal	Sensors
Volume	23
Issue number	6
DOIs	https://doi.org/10.3390/s23063297
Publication status	Published - Mar 2023
Externally published	Yes

Bibliographical note

Publisher Copyright:
© 2023 by the authors.

Keywords

graphene
THz cross-correlation spectroscopy
THz quasi-time-domain spectroscopy
THz time-domain spectroscopy

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10.3390/s23063297

Cite this

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abstract = "We demonstrate the use of a novel, integrated THz system to obtain time-domain signals for spectroscopy in the 0.1{\textendash}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.",

keywords = "graphene, THz cross-correlation spectroscopy, THz quasi-time-domain spectroscopy, THz time-domain spectroscopy",

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month = mar,

doi = "10.3390/s23063297",

language = "English",

volume = "23",

journal = "Sensors",

issn = "1424-8220",

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T1 - Terahertz Cross-Correlation Spectroscopy and Imaging of Large-Area Graphene

AU - Mølvig, Bjørn Hübschmann

AU - Bæk, Thorsten

AU - Ji, Jie

AU - Bøggild, Peter

AU - Lange, Simon Jappe

AU - Jepsen, Peter Uhd

PY - 2023/3

Y1 - 2023/3

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AB - 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.

KW - graphene

KW - THz cross-correlation spectroscopy

KW - THz quasi-time-domain spectroscopy

KW - THz time-domain spectroscopy

UR - https://www.scopus.com/pages/publications/85152215044

U2 - 10.3390/s23063297

DO - 10.3390/s23063297

M3 - Article

AN - SCOPUS:85152215044

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JO - Sensors

JF - Sensors

IS - 6

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ER -

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

Abstract

Bibliographical note

Keywords

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Correction to: Terahertz Cross-Correlation Spectroscopy and Imaging of Large-Area Graphene (Sensors, (2023), 23, 6, (3297), 10.3390/s23063297)

Cite this