期刊
JOURNAL OF LIGHTWAVE TECHNOLOGY
卷 32, 期 20, 页码 3676-3682出版社
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/JLT.2014.2321992
关键词
Parallel plate waveguide; tapered waveguide; terahertz; terahertz field enhancement
资金
- Natural Science and Engineering Research Council Canada
We demonstrate experimentally the coupling of a THz beam into a laser-machined double-tapered thick slot waveguide operating between 0.3 and 2 THz. Simulation reveals that the THz field generated by a standard photoconductive antenna coupled to an undoped aspheric HRFZ-silicon focusing lens can be enhanced by 30 dB in the 40 mu m taper waist, relative to a traditional Gaussian beam waist (at 1 THz). Analysis of the 8 dB insertion loss reveals positive implications for coupling between THz transceivers and in-plane-emitting antennas or low-loss THz waveguides.
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