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Influence of the emitter part of a THz transceiver on the detected THz signal emitted by a separate THz emitter. (a) The detected time-domain signals when the THz path is blocked and (b) the THz power spectra for a deactivated emitter part (dark green) vs. an activated emitter part at 40 kV/cm bias and 20 mW optical power (light green). The corresponding noise levels are shown in blue and black, respectively.
