Fig. 5: Dynamic range as a function of averaging time for selected frequencies within the THz spectrum.
From: Optoelectronic frequency-modulated continuous-wave terahertz spectroscopy with 4 THz bandwidth

Circles, diamonds, squares, and triangles correspond to frequencies of 0.1 (spectral maximum), 0.5, 1, and 2 THz. The dashed gray line indicates an increase of 10 dB per decade, as predicted by Eq. (20).