Continuous wave generation up to 1.3 THz using antenna-coupled silicon integrated Ge photodiodes
2018
We report continuous wave emission up to 1.3 THz using antenna-coupled silicon-integrated germanium photodiodes fabricated using an industrial SOI process. The optical-to- THz conversion efficiency of about 1% at 100 GHz is attributed to the high responsivity of up to 1.2 A/W and small capacitance $(\mathbf{10\pm 5}\mathbf{fF})$ of the photodiodes. Such devices are suitable for the fabrication of highly efficient phased THz emitter arrays based on photomixing.
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