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Samenvatting

A novel THz photomixer detector based on interdigitated multilayer graphene (MLG) on low-temperature-grown (LTG) GaAs is demonstrated. It exhibits an enhanced performance as compared with conventional LTG GaAs photomixers with metallic finger contacts. The obtained responsivity and the dynamic range are about 30× higher and the bandwidth is twice as large. The reason for this enormous improvement lies in the transparency of the graphene electrodes to VIS/NIR radiation which permits to optically excite mobile charge carriers in the LTG GaAs not only between the electrode fingers, but also below them. The measured enhancement of the detected photocurrent is explained by model calculations and simulations.

Originele taal-2Engels
Titel2023 48th International Conference on Infrared, Millimeter, and Terahertz Waves, IRMMW-THz 2023
UitgeverijInstitute of Electrical and Electronics Engineers
Aantal pagina's2
ISBN van elektronische versie979-8-3503-3660-3
DOI's
StatusGepubliceerd - 31 okt. 2023
Evenement48th International Conference on Infrared, Millimeter, and Terahertz Waves, IRMMW-THz 2023 - Montreal, Canada
Duur: 17 sep. 202322 sep. 2023

Congres

Congres48th International Conference on Infrared, Millimeter, and Terahertz Waves, IRMMW-THz 2023
Land/RegioCanada
StadMontreal
Periode17/09/2322/09/23

Financiering

ACKNOWLEDGMENT This work was financially supported by The Eindhoven Hendrik Casimir Institute (EHCI), one of the four research institutes of the Eindhoven University of Technology, through the EHCI Open Call for Collaborative Projects.

FinanciersFinanciernummer
Eindhoven Hendrik Casimir institute
Technische Universiteit Eindhoven

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