Free-space electro-optic detection of continuous-wave terahertz radiation
1999; American Institute of Physics; Volume: 75; Issue: 17 Linguagem: Inglês
10.1063/1.125065
ISSN1520-8842
AutoresAjay Nahata, James T. Yardley, Tony F. Heinz,
Tópico(s)Semiconductor Quantum Structures and Devices
ResumoWe present a scheme for the coherent detection of freely propagating continuous-wave terahertz radiation using electro-optic detection. The terahertz radiation is generated by photomixing two single-mode laser diodes in an antenna fabricated on low-temperature-grown GaAs. This radiation is detected using the electro-optic effect in 〈110〉 ZnTe. In contrast to typical terahertz detection techniques, this is a frequency-domain measurement that relies on coherent up-conversion of the terahertz field combined with optical homodyning to suppress background noise.
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