Detection of Far Infrared Radiation using Glow Discharge Detectors GDDs

Date

2015-04-11

Author

Küçükkkeskin, Efe
Alasgarzade, Namıg
Uzun Kaymak, İlker Ümit
Altan, Hakan

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The plasma medium which is created inside the GDD enables us to detect a wide wavelength range of differential or modulated EM signals impinging on them [1-2]. The interaction between the plasma and various frequency EM waves are still being investigated and in the terahertz range the interaction mechanism is still not well understood [1]. To understand the interaction better commercially available GDDs were studied using both time-domain and continuous wave mm wave/THz measurement systems. Using a 113GHz Schottky diode multiplied source the detection behaviour of the detector was investigated while the interaction of the GDD structure with the THz field was investigated between 100-1000GHz. The GDD response is similar to other commercially available room temperature mm wave/THz detectors and performs at a fraction of their cost. Using lock-in detection techniques the response was characterized at modulation frequencies up to 100 kHz. Furthermore the orientation of the electrode structure was sensitive to the polarization of the incident field. The polarization sensitive behaviour indicates a strong coupling between the incident and native field in the plasma. These effects were investigated by transmitting a broadband THz pulse through the structure for when the device was on and off. Within the constraints on the maximum modulation frequency of the THz transmitter antenna, certain THz frequencies are attenuated suggesting the electrode structure of the GDD can play a role in the detection. Future work will entail understanding the interaction by using numerical simulations modelling of a similar geometric structure with a glow discharge under modulated EM wave illumination.

URI

http://www.ufe.cz/smmo2015/programme.html
https://hdl.handle.net/11511/71676
https://www.ufe.cz/smmo2015/files/SMMO2015-Book_of_Abstracts.pdf
www.ufe.cz/smmo2015

Conference Name

6th International Conference onSemiconductor Mid-IR Materials and OpticsSMMO2015 ( 08 - 11 April 2015 )

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Department of Physics, Conference / Seminar

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Citation Formats

E. Küçükkkeskin, N. Alasgarzade, İ. Ü. Uzun Kaymak, and H. Altan, “Detection of Far Infrared Radiation using Glow Discharge Detectors GDDs,” Prague, Czech Republic, 2015, p. 49, Accessed: 00, 2021. [Online]. Available: http://www.ufe.cz/smmo2015/programme.html.