Please use this identifier to cite or link to this item: https://hdl.handle.net/20.500.11851/2747
Title: Time-Domain Characterization of the Radiation Pattern of the Terahertz Photoconductive Antennas
Authors: Elmabruk, Kholoud
Demir, Kazım
Altan, Hakan
Şahin, Asaf Behzat
Ünlü, Mehmet
Keywords: Terahertz
radiation pattern
photoconductive antennas
time-domain spectroscopy
physical optics
Issue Date: Jun-2019
Publisher: Springer New York LLC
Source: Elmabruk, K., Demir, K., Altan, H., Sahin, A. B., and Unlu, M. (2019). Time-Domain Characterization of the Radiation Pattern of the Terahertz Photoconductive Antennas. Journal of Infrared, Millimeter, and Terahertz Waves, 40(6), 595-605.
Abstract: We present a novel method to characterize the radiation pattern of the terahertz photoconductive antennas in time-domain. The method uses a modified version of the terahertz time-domain spectroscopy system, where we use the basics of physical optics and the optical path compensation principle using the delay line in the system in order to detect the spatial distribution of the terahertz radiation of the photoconductive antennas in two major planes. Using this method, we investigate two terahertz photoconductive antennas, namely dipole and spiral antennas, and compare the measurement results with simulations in time-domain. The comparison of the calculation and measurement results shows good agreement, where we measure an average and maximum optical path difference error of 4.7 and 8%, which results in an average and maximum half-power beam width error of 1.87 and 3.2 degrees, respectively. We believe that the proposed method will be useful for predicting the system level performance of the terahertz time-domain spectroscopy systems in real-life applications.
URI: https://hdl.handle.net/20.500.11851/2747
https://link.springer.com/article/10.1007%2Fs10762-019-00588-y
ISSN: 1866-6892
Appears in Collections:Elektrik ve Elektronik Mühendisliği Bölümü / Department of Electrical & Electronics Engineering
Scopus İndeksli Yayınlar Koleksiyonu / Scopus Indexed Publications Collection
WoS İndeksli Yayınlar Koleksiyonu / WoS Indexed Publications Collection

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