A. Mingardi , W-D. Zhang, E. R. Brown,
http://ieeexplore.ieee.org/document/8067209/
Ultrafast photoconductive switches were fabricated from GaAs embedded with ErAs nanoparticles and tested in two antenna types: a self-complementary square spiral, and a slot antenna designed for half-wave resonance at 567 GHz. These devices are designed for driving with 1550nm lasers. At least ~46 μW of THz average power was generated from the spiral, and ~5 μW from the resonant slot. This is the first demonstration of a 1550-nm-driven GaAs:ErAs THz source in a resonant antenna.
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