Abstract

Frequency-selective and frequency-tunable terahertz photodetectors are important for nanoscale control of light. This work demonstrates room-temperature resonant THz detection in short-channel gated photodetectors made from high-quality single-layer graphene. The device shows gate-tunable, frequency-dependent photoresponse oscillations consistent with plasmon-assisted resonances from cryogenic temperatures up to 300 K, enabled by weak intrinsic electron-phonon scattering in graphene.

Abstract

Frequency-selective and frequency-tunable terahertz photodetectors are important for nanoscale control of light. This work demonstrates room-temperature resonant THz detection in short-channel gated photodetectors made from high-quality single-layer graphene. The device shows gate-tunable, frequency-dependent photoresponse oscillations consistent with plasmon-assisted resonances from cryogenic temperatures up to 300 K, enabled by weak intrinsic electron-phonon scattering in graphene.

Abstract

Frequency-selective and frequency-tunable terahertz photodetectors are important for nanoscale control of light. This work demonstrates room-temperature resonant THz detection in short-channel gated photodetectors made from high-quality single-layer graphene. The device shows gate-tunable, frequency-dependent photoresponse oscillations consistent with plasmon-assisted resonances from cryogenic temperatures up to 300 K, enabled by weak intrinsic electron-phonon scattering in graphene.

Abstract

Frequency-selective and frequency-tunable terahertz photodetectors are important for nanoscale control of light. This work demonstrates room-temperature resonant THz detection in short-channel gated photodetectors made from high-quality single-layer graphene. The device shows gate-tunable, frequency-dependent photoresponse oscillations consistent with plasmon-assisted resonances from cryogenic temperatures up to 300 K, enabled by weak intrinsic electron-phonon scattering in graphene.