THz detection by photomixing in graphene

Mark D. Thomson; Florian Ludwig; Jakob Holstein; Reiam Al-Mudhafar; Shihab Al-Daffaie; Hartmut G. Roskos

doi:10.1109/IRMMW-THz57677.2023.10299223

THz detection by photomixing in graphene

Mark D. Thomson
, Florian Ludwig
, Jakob Holstein
, Reiam Al-Mudhafar
, Shihab Al-Daffaie
, Hartmut G. Roskos

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › Academic › peer-review

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Abstract

Graphene has recently been shown to exhibit a strong nonlinear response in frequency multiplication experiments with sub-1-THz radiation. This nonlinearity arises from ultrafast heating and cooling of its charge carriers during each oscillation cycle of the radiation. Here, we experimentally and by simulations investigate the applicability of this 'relaxational' nonlinearity for the detection of continuous-wave (cw) THz radiation by photomixing. The charge carriers of antenna-coupled graphene stripes are heated by the beat-note of two cw near-infrared (NIR) laser beams. This leads to a periodic modulation of the conductance of the graphene stripes, which is employed for the coherent detection of the THz radiation generated in an optoelectronic THz emitter excited by a portion of the NIR beat-note.

Original language	English
Title of host publication	2023 48th International Conference on Infrared, Millimeter, and Terahertz Waves, IRMMW-THz 2023
Publisher	Institute of Electrical and Electronics Engineers
Number of pages	1
ISBN (Electronic)	979-8-3503-3660-3
DOIs	https://doi.org/10.1109/IRMMW-THz57677.2023.10299223
Publication status	Published - 31 Oct 2023
Event	48th International Conference on Infrared, Millimeter, and Terahertz Waves, IRMMW-THz 2023 - Montreal, Canada Duration: 17 Sept 2023 → 22 Sept 2023

Conference

Conference	48th International Conference on Infrared, Millimeter, and Terahertz Waves, IRMMW-THz 2023
Country/Territory	Canada
City	Montreal
Period	17/09/23 → 22/09/23

Funding

Funding by DFG (RO 770/40) is gratefully acknowledged.

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10.1109/IRMMW-THz57677.2023.10299223

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title = "THz detection by photomixing in graphene",

abstract = "Graphene has recently been shown to exhibit a strong nonlinear response in frequency multiplication experiments with sub-1-THz radiation. This nonlinearity arises from ultrafast heating and cooling of its charge carriers during each oscillation cycle of the radiation. Here, we experimentally and by simulations investigate the applicability of this 'relaxational' nonlinearity for the detection of continuous-wave (cw) THz radiation by photomixing. The charge carriers of antenna-coupled graphene stripes are heated by the beat-note of two cw near-infrared (NIR) laser beams. This leads to a periodic modulation of the conductance of the graphene stripes, which is employed for the coherent detection of the THz radiation generated in an optoelectronic THz emitter excited by a portion of the NIR beat-note.",

author = "Thomson, \{Mark D.\} and Florian Ludwig and Jakob Holstein and Reiam Al-Mudhafar and Shihab Al-Daffaie and Roskos, \{Hartmut G.\}",

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doi = "10.1109/IRMMW-THz57677.2023.10299223",

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publisher = "Institute of Electrical and Electronics Engineers",

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note = "48th International Conference on Infrared, Millimeter, and Terahertz Waves, IRMMW-THz 2023 ; Conference date: 17-09-2023 Through 22-09-2023",

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Thomson, MD, Ludwig, F, Holstein, J, Al-Mudhafar, R, Al-Daffaie, S & Roskos, HG 2023, THz detection by photomixing in graphene. in 2023 48th International Conference on Infrared, Millimeter, and Terahertz Waves, IRMMW-THz 2023., 10299223, Institute of Electrical and Electronics Engineers, 48th International Conference on Infrared, Millimeter, and Terahertz Waves, IRMMW-THz 2023, Montreal, Canada, 17/09/23. https://doi.org/10.1109/IRMMW-THz57677.2023.10299223

THz detection by photomixing in graphene. / Thomson, Mark D.; Ludwig, Florian; Holstein, Jakob et al.
2023 48th International Conference on Infrared, Millimeter, and Terahertz Waves, IRMMW-THz 2023. Institute of Electrical and Electronics Engineers, 2023. 10299223.

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › Academic › peer-review

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T1 - THz detection by photomixing in graphene

AU - Thomson, Mark D.

AU - Ludwig, Florian

AU - Holstein, Jakob

AU - Al-Mudhafar, Reiam

AU - Al-Daffaie, Shihab

AU - Roskos, Hartmut G.

PY - 2023/10/31

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N2 - Graphene has recently been shown to exhibit a strong nonlinear response in frequency multiplication experiments with sub-1-THz radiation. This nonlinearity arises from ultrafast heating and cooling of its charge carriers during each oscillation cycle of the radiation. Here, we experimentally and by simulations investigate the applicability of this 'relaxational' nonlinearity for the detection of continuous-wave (cw) THz radiation by photomixing. The charge carriers of antenna-coupled graphene stripes are heated by the beat-note of two cw near-infrared (NIR) laser beams. This leads to a periodic modulation of the conductance of the graphene stripes, which is employed for the coherent detection of the THz radiation generated in an optoelectronic THz emitter excited by a portion of the NIR beat-note.

AB - Graphene has recently been shown to exhibit a strong nonlinear response in frequency multiplication experiments with sub-1-THz radiation. This nonlinearity arises from ultrafast heating and cooling of its charge carriers during each oscillation cycle of the radiation. Here, we experimentally and by simulations investigate the applicability of this 'relaxational' nonlinearity for the detection of continuous-wave (cw) THz radiation by photomixing. The charge carriers of antenna-coupled graphene stripes are heated by the beat-note of two cw near-infrared (NIR) laser beams. This leads to a periodic modulation of the conductance of the graphene stripes, which is employed for the coherent detection of the THz radiation generated in an optoelectronic THz emitter excited by a portion of the NIR beat-note.

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BT - 2023 48th International Conference on Infrared, Millimeter, and Terahertz Waves, IRMMW-THz 2023

PB - Institute of Electrical and Electronics Engineers

T2 - 48th International Conference on Infrared, Millimeter, and Terahertz Waves, IRMMW-THz 2023

Y2 - 17 September 2023 through 22 September 2023

ER -

THz detection by photomixing in graphene

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