Plasmon-enhanced below bandgap photoconductive terahertz generation and detection

Plasmon-enhanced below bandgap photoconductive terahertz generation and detection

Disclosed are systems and methods for improving applications involving the generation and detection of electromagnetic radiation at terahertz (THz) frequencies. Embodiments of the systems and methods include the fabrication and use of plasmonic devices that enhance light-matter interaction at the na...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: Darcie, Thomas E, Gordon, Reuven, Jooshesh, Afshin
Format: Patent
Sprache:eng
Schlagworte:
ANTENNAS, i.e. RADIO AERIALS
BASIC ELECTRIC ELEMENTS
COLORIMETRY
ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR
ELECTRICITY
MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT,POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRA-RED,VISIBLE OR ULTRA-VIOLET LIGHT
MEASURING
PHYSICS
RADIATION PYROMETRY
SEMICONDUCTOR DEVICES
TESTING
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Beschreibung
Zusammenfassung:Disclosed are systems and methods for improving applications involving the generation and detection of electromagnetic radiation at terahertz (THz) frequencies. Embodiments of the systems and methods include the fabrication and use of plasmonic devices that enhance light-matter interaction at the nanometer scale by extreme focusing with nanostructured metals. This plasmonic enhancement is used to produce high efficiency THz photoconductive switches that combine the benefits of low-temperature grown GaAs while using mature 1.55 μm femtosecond lasers operating with photon energy below the GaAs band-gap.