Generation and detection of ultrabroadband terahertz radiation using photoconductive emitters and receivers
- 12 July 2004
- journal article
- research article
- Published by AIP Publishing in Applied Physics Letters
- Vol. 85 (2), 164-166
- https://doi.org/10.1063/1.1768313
Abstract
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.Keywords
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