Microwave dissipation in arrays of single-wall carbon nanotubes
Proposed for publication in Applied Physics Letters.
Abstract not provided.
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Jump to search filtersTunable THz detector based on a grating gated field-effect transistor
Proceedings of SPIE - The International Society for Optical Engineering
A split-grating-gate detector design has been implemented in an effort to combine the tunabiliry of the basic gratinggate detector with the high responsivity observed in these detectors when approaching the pinchoff regime. The redesign of the gates by itself offers several orders of magnitude improvement in resonant responsivity. Further improvements are gained by placing the detector element on a thermally isolating membrane in order to increase the effects of lattice heating on the device response.
Plasmon Based Split-Grating Gate Terahertz Detector
Abstract not provided.
THz physics and devices using high-mobility 2DEG GaAs-AlGaAs heterostructures
Abstract not provided.
Single-quantum-well grating-gated terahertz plasmon detectors
Proposed for publication in Applied Physics Letters.
A grating-gated field-effect transistor fabricated from a single-quantum well in a high-mobility GaAs-AlGaAs heterostructure is shown to function as a continuously electrically tunable photodetector of terahertz radiation via excitation of resonant plasmon modes in the well. Different harmonics of the plasmon wave vector are mapped, showing different branches of the dispersion relation. As a function of temperature, the resonant response magnitude peaks at around 30 K. Both photovoltaic and photoconductive responses have been observed under different incident power and bias conditions.
Results 176–180 of 180