Generation and detection of coherent terahertz waves using two photomixers
- 28 December 1998
- journal article
- research article
- Published by AIP Publishing in Applied Physics Letters
- Vol. 73 (26), 3824-3826
- https://doi.org/10.1063/1.122906
Abstract
A general technique has been demonstrated at microwave and submillimeter-wave frequencies for photoconductive sampling in the frequency domain using photomixers and continuous-wave laser diodes. A microwave version in which two photomixers were coupled by a transmission line was developed to quantitatively test the concept from 0.05 to 26.5 GHz. A quasioptical version using antenna-coupled photomixers was demonstrated from 25 GHz to 2 THz. Such a system can outperform systems based on time-domain photoconductive sampling in frequency resolution, spectral brightness, system size, and cost.Keywords
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