Antenna-boosted mixing of terahertz and near-infrared radiation

Journal Article · Mon Sep 01 00:00:00 EDT 2014 · Applied Physics Letters

DOI:https://doi.org/10.1063/1.4894634· OSTI ID:22311016

Banks, Hunter B.; Sherwin, Mark S. ^[1]; Hofmann, Andrea ^[1]; Mack, Shawn; Gossard, Arthur C. ^[2]

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1. Physics Department, University of California, Santa Barbara, California 93106 (United States)
2. Materials Department, University of California, Santa Barbara, California 93106 (United States)

Using moderate terahertz intensities of approximately 20 kW/cm{sup 2} near 0.6 THz, together with simple antennas, we have observed up to 12 sidebands on a near IR laser. The high-order sidebands were generated at room temperature in a membrane containing GaAs/AlGaAs quantum wells. The antennas were rectangular apertures ∼0.2 mm long in a gold film evaporated onto the membrane. Comparing the intensities required to generate comparable sideband spectra with and without antennas, we estimate the local terahertz field was enhanced by a factor of 5 ± 1, in agreement with finite difference time domain calculations.

• OSTI ID: 22311016
• Journal Information: Applied Physics Letters, Vol. 105, Issue 9; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA); ISSN 0003-6951
• Country of Publication: United States
• Language: English

Related Subjects

75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
ALUMINIUM COMPOUNDS
ANTENNAS
APERTURES
COMPUTERIZED SIMULATION
FILMS
GALLIUM ARSENIDES
GOLD
MEMBRANES
NEAR INFRARED RADIATION
QUANTUM WELLS
SPECTRA
TEMPERATURE RANGE 0273-0400 K