Ultra-Wideband PIN-PD THz Emitter with >5.5 THz Bandwidth
Author:
Affiliation:
1. Fraunhofer Institute for Telecommunications, Heinrich Hertz Institute
Abstract
We present novel PIN photodiode (PD) continuous wave (cw) terahertz (THz) emitters with an increased responsivity and reduced substrate thickness compared to the state-of-the-art. Our improved devices feature up to 4 dB higher output power below 500 GHz with maximum power of -0.53 dBm at 115 GHz and strongly reduced THz absorption of the substrate for frequencies above 3 THz. The latter enables us to measure coherent cw THz spectra with a record bandwidth of 5.5 THz, for the first time, which is 1 THz (22%) more than the state-of-the-art.
Publisher
Springer Science and Business Media LLC
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