A terahertz plasmon cavity detector

Journal Article · Sun Nov 07 23:00:00 EST 2010 · Applied Physics Letters

DOI:https://doi.org/10.1063/1.3513339· OSTI ID:21471045

Dyer, G C; Vinh, N Q; Allen, S J ^[1]; Aizin, G R; Mikalopas, J ^[2]; Reno, J L; Shaner, E A ^[3]

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1. Institute for Terahertz Science and Technology, UC Santa Barbara, Santa Barbara, California 93106 (United States)
2. Kingsborough College, City University of New York, Brooklyn, New York 11235 (United States)
3. Sandia National Laboratories, P.O. Box 5800, Albuquerque, New Mexico 87185 (United States)

Sensitivity of a plasmonic detector is enhanced by integrating a broadband log-periodic antenna with a two-dimensional plasma cavity that is defined by source, drain, and multiple gates of a GaAs/AlGaAs high electron mobility transistor. Both narrow-band terahertz detection and a rich harmonic spectrum are evident. With a bolometric sensor in the channel, we report responsivity, on resonance at 235-240 GHz and at 20 K, of up to 7 kV/W and a noise equivalent power of 5x10{sup -10} W/Hz{sup 1/2}.

• OSTI ID: 21471045
• Journal Information: Applied Physics Letters, Journal Name: Applied Physics Letters Journal Issue: 19 Vol. 97; ISSN APPLAB; ISSN 0003-6951
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
ALUMINIUM ARSENIDES
ALUMINIUM COMPOUNDS
ANTENNAS
ARSENIC COMPOUNDS
ARSENIDES
BOLOMETERS
CHARGED-PARTICLE TRANSPORT
DETECTION
ELECTRICAL EQUIPMENT
ELECTRON MOBILITY
EQUIPMENT
FREQUENCY RANGE
GALLIUM ARSENIDES
GALLIUM COMPOUNDS
GHZ RANGE
MATERIALS
MEASURING INSTRUMENTS
MOBILITY
NOISE
PARTICLE MOBILITY
PERIODICITY
PLASMA
PLASMONS
PNICTIDES
QUASI PARTICLES
RADIATION TRANSPORT
RESONANCE
SEMICONDUCTOR DEVICES
SEMICONDUCTOR MATERIALS
SENSITIVITY
SENSORS
TEMPERATURE RANGE
TEMPERATURE RANGE 0013-0065 K
TRANSISTORS
VARIATIONS