title: Broadband THz detection from 0.1 to 22 THz with large area field-effect transistors.
abstract: We report on ultrafast detection of radiation between 100 GHz and 22 THz by field-effect transistors in a large area configuration. With the exception of the Reststrahlenband of GaAs, the spectral coverage of the GaAs-based detectors is more than two orders of magnitude, covering the entire THz range (100 GHz - 10 THz). The temporal resolution of the robust devices is yet limited by the 30 GHz oscilloscope used for read out. The responsivity roll-off towards higher frequencies is weaker than expected from an RC-roll-off model. Terahertz pulses with peak powers of up to 65kW have been recorded without damaging the devices.
authors.forename: Stefan
authors.initials: S
authors.lastname: Regensburger
authors.forename: Martin
authors.initials: M
authors.lastname: Mittendorff
authors.forename: Stephan
authors.initials: S
authors.lastname: Winnerl
authors.forename: Hong
authors.initials: H
authors.lastname: Lu
authors.forename: Arthur C
authors.initials: AC
authors.lastname: Gossard
authors.forename: Sascha
authors.initials: S
authors.lastname: Preu