Generation and detection of coherent terahertz waves using two photomixers
作者:
S. Verghese,
K. A. McIntosh,
S. Calawa,
W. F. Dinatale,
E. K. Duerr,
K. A. Molvar,
期刊:
Applied Physics Letters
(AIP Available online 1998)
卷期:
Volume 73,
issue 26
页码: 3824-3826
ISSN:0003-6951
年代: 1998
DOI:10.1063/1.122906
出版商: AIP
数据来源: AIP
摘要:
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.
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