Analysis of the Interaction between THz Waves and Low Cost Plasma Detectors for the Development of Stand-Off Imaging Systems

2020-06-16
Pavia, J P
Ribeiro, Marco
Kuşoğlu Sarıkaya, Cemre
Altan, Hakan
AKBAR, DEMİRAL
Souto, N
Over the past few years, the Terahertz (THz) band has been seen as quite promising in fields of spectroscopy and imaging. Most of the current manufacturing methods for THz emission and detection devices are limited due to the associated cost and complexity, therefore alternative ways have been sought driven by the availability of new technologies. From recent research in the field of imaging, commercially available Glow Discharge Detectors (GDDs) have been found to be an interesting solution because of their low cost and efficiency in detecting electromagnetic (EM) radiation from microwave to higher frequencies of the electromagnetic spectrum. Several studies have been carried out in the scope of millimeter/sub-millimeter waves to understand how its detection mechanism changes for higher frequencies and how the mechanisms of plasma generation influence the device's performance. In this paper, we aim to study the interaction between THz waves and the structure of a GDD, namely, its reflection, transmission and losses. Numerical modelling of electromagnetics, by solving the Maxwell's equations, has been undertaken for this type of device using different gas pressures of the lamp. Our results show that these devices are not optimized for the THz domain.

Suggestions

Parallel 1d3v Particle in Cell/Monte Carlo Collision (PIC/MCC) Simulation of a Glow Discharge Millimeter Wave Detector
Kuşoğlu Sarıkaya, Cemre; Akbar, Demiral; Altan, Hakan (2018-01-15)
Glow discharge detectors can be a good alternative to existing Schottky diodes, Golay cells and pyroelectric detectors because they are inexpensive and can detect mm-wave and sub-mm radiation successfully. This detection occurs as a result of the interaction of the radiation with the electrons in the plasma. It is required to understand this interaction mechanism to obtain optimum detection parameters. Previous methods have focused on understanding the interaction using analytical models, where the radiatio...
Understanding the Effect of THz/mm wave - Plasma Interaction on the Brightness of Glow Discharge Detectors
Kusoglu-Sarikaya, Cemre; Akbar, Demiral; Altan, Hakan (2019-01-01)
Today, the fact that non-ionizing THz and mm wave can be used in many areas reveals the necessity of devices that can efficiently detect these waves. Compared to existing commercial detectors, cost-effective neon indicator lamps acting as glow discharge detectors (GDDs) are known to be better in speed and responsivity. In GDDs, detection occurs as a result of the interaction between radiation and plasma. Although there are many studies in the literature trying to explain this interaction, these studies are ...
Optimization of a microbolometer pixel for operation in the sub-1 THz region
Demirörs, Oytun; Atik, Bahar; Dirican, Emrah; Altan, Hakan; Esentürk, Okan; Ylldlrlm, Mustafa; Akın, Tayfun (2021-01-01)
Imaging in the Terahertz (THz) region has drawn attention in recent years, but the nature of the THz frequency regime causes some drawbacks in imaging such as long wavelength, high cost, and low emission levels at room temperature. Because of the high atmospheric absorption of THz waves, fabrication of a microbolometer pixel that works in the sub-1 THz frequency regime is necessary. Large pixel pitches due to longer wavelengths and the resulting higher thermal mass pose a difficult challenge. Due to those l...
Applications of various sensors for detecting THz waves in adverse conditions
Aytac, B.; Sahin, A. B.; Altan, Hakan (2019-01-01)
© 2019 SPIE.Comparison of atmospheric transmission in the bands ranging from terahertz (THz) to infrared (IR) bands using MODTRAN and available literature data show that THz radiation is not dramatically attenuated in adverse conditions when compared to IR bands especially at long distances. Favorable THz bands and mechanisms for detection of low IR signature target under adverse conditions in these bands are determined. In this study, a set of experiments are conducted to compare THz detection mechanisms, ...
THz transmission and detection through glow discharge detectors
Cinar, K.; Altan, Hakan; Sahin, A. B. (2013-04-30)
The capability of low cost glow discharge detectors (GDDs) to detect terahertz (THz) radiation has drawn much attention recently. In order to employ them in applications such as THz imaging these studies have typically focused on the response of the GDD at specific frequencies. To better understand the spectral behavior of glow discharges, we have not only examined the response of the GDD at a specific frequency of 118 GHz, but also we examined the interaction mechanism of GDDs with THz radiation using tera...
Citation Formats
J. P. Pavia, M. Ribeiro, C. Kuşoğlu Sarıkaya, H. Altan, D. AKBAR, and N. Souto, “Analysis of the Interaction between THz Waves and Low Cost Plasma Detectors for the Development of Stand-Off Imaging Systems,” 2020, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/57730.