Journal
APPLIED PHYSICS LETTERS
Volume 85, Issue 2, Pages 164-166Publisher
AMER INST PHYSICS
DOI: 10.1063/1.1768313
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We report the coherent generation and detection of ultrabroadband terahertz (THz) radiation using low-temperature-grown GaAs photoconductive antennas as both emitters and receivers. THz radiation with frequency components over 15 THz was obtained, the highest reported for a THz time-domain system based on photoconductive antennas. Such a system has a smooth spectral distribution between 0.3 and 7.5 THz, ideal for spectroscopic applications. In addition, sharp spectral features at 8.0, and 8.8 THz were observed, and explained in terms of optical phonon resonances in the photoconductive antennas. (C) 2004 American Institute of Physics.
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