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This article is cited in 4 scientific papers (total in 4 papers)
UV, IR, and terahertz optics
Emission efficiency of terahertz antennas with conventional topology and metal metasurface: a comparative analysis
D. V. Lavrukhinab, A. E. Yachmeneva, I. A. Glinskiya, N. V. Zenchenkoab, R. A. Khabibullina, Yu. G. Goncharovc, I. E. Spektorc, K. I. Zaitsevbc, D. S. Ponomareva a V. G. Mokerov Institute of Ultra High Frequency Semiconductor Electronics of RAS, Moscow
b Bauman Moscow State Technical University
c Prokhorov General Physics Institute of the Russian Academy of Sciences, Moscow
Abstract:
Characteristics of photoconductive antennas (PCAs)–radiation sources with conventional topology and a metal metasurface in the shape of a plasmonic grating made on the basis of InGaAs/InAlAs superlattice heterostructures–have been studied experimentally. The photocurrents and THz power spectra of samples of PCAs have been measured, the energy characteristics of terahertz (THz) radiation, and the optical-to-THz conversion efficiency at different bias voltages and average laser excitation power have been determined. For PCAs with a metasurface, the integrated THz radiation power of 10 $\mu$W and a conversion efficiency of up to 0.2%, unattainable for antennas with conventional topology due to their thermal breakdown, have been demonstrated experimentally. Therefore, it can be stated that PCAs with a metasurface are efficient sources of THz radiation and can become an element base for constructing THz spectroscopy systems associated with solving medical diagnostic problems.
Keywords:
terahertz pulsed spectroscopy, element base of terahertz optics, photoconductive antenna, plasmonic grating, metasurface, optical field plasmon localization, semiconductors, noninvasive medicine.
Received: 17.12.2019 Revised: 10.01.2020 Accepted: 28.02.2020
Citation:
D. V. Lavrukhin, A. E. Yachmenev, I. A. Glinskiy, N. V. Zenchenko, R. A. Khabibullin, Yu. G. Goncharov, I. E. Spektor, K. I. Zaitsev, D. S. Ponomarev, “Emission efficiency of terahertz antennas with conventional topology and metal metasurface: a comparative analysis”, Optics and Spectroscopy, 128:7 (2020), 1012–1019; Optics and Spectroscopy, 128:7 (2020), 1018–1025
Linking options:
https://www.mathnet.ru/eng/os380 https://www.mathnet.ru/eng/os/v128/i7/p1012
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