Glow Discharge Detectors (GDD) offer a low cost solution for the detection of THz and millimeter waves with high sensitivity and fast
response at room temperature. This work aims to contribute with a detailed study on the role of frequency dependent resonant effects in
the detection mechanism of GDDs and present an optimal design for detection. It has a laboratory component (TD-THz spectroscopy and
CW High Frequency THz measurements) supported by theoretical and numerical analysis of THz wave propagation in these devices.
A research field, started in the 70s, which consisted in using glow discharge lamps to detect THz and millimeter waves has become
relevant again in the international arena due to the high interest in developing THz technologies. By forming the discharge in a gas kept
at high pressure between two leads, the lamp generates light and a plasma is formed inside the device which drives it to be sensitive,
and consequently to detect, THz and/or millimeter waves. Our research not only support this, but using the METU-Ankara Turkey
home-built THz pulsed spectrometers we also see frequency resonant effects as the THz pulse passes through the plasma. We believe
that these are due to the structure of the plasma glow discharge region and the physical structure of the cathode and anode. Our goal is
to understand the role of these resonant effects in the detection mechanism of the glow discharge lamp. We intend to investigate this by
using the time-domain THz spectroscopy systems as well as CW high frequency THz measurements, available at the laboratories in

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