Abstract
A new design based on a metamaterial superstrate structure for THz photoconductive antennas is reported herein. To enhance the THz output frequency peaks, the use of metamaterials on THz photoconductive antennas is proposed, and simulated by using the CST Microwave Studio software. Use of such a metamaterial superstrate structure over the electrodes of an antenna leads to an enhancement of the frequency peak from 0.8 to 1.3 THz.
Similar content being viewed by others
References
Tonouchi, M.: Cutting-edge THz technology. Nat. Photonics 1, 97–105 (2007)
Auston, D.H., Chung, K.P., Smith, P.R.: Picosecond photoconducting Hertzian dipoles. Appl. Phys. Lett. 45, 284 (1984)
Vodopyanov, K.L.: Optical THz-wave generation with periodically-inverted GaAs. Laser Photon. Rev. 2(1–2), 11–25 (2008)
Tani, M., Matsuura, S., Sakai, K., Nakashima, S.: Emission characteristics of photoconductive antennas based on low-temperature-grown GaAs and semi-insulating GaAs. Appl. Opt. 36(30), 7853–7859 (1997)
Brener, I., Dykaar, D., Frommer, A., Pfeiffer, L.N., Lopata, J., Wynn, J., West, K.: THz emission from electric field singularities in biased semiconductor. Opt. Lett. 21, 1924–1926 (1996)
Kim, J.H., Polley, A., Ralph, S.E.: Efficient photoconductive THz source using line excitation. Opt. Lett. 30, 2490–2492 (2005)
Zhang, J.: Characterization of the THz photoconductive antenna by three-dimensional finite difference time-domain method. arXiv:1406-3872, pp. 1–21 (2014)
Piao, Z., Tani, M., Sakai, K.: Carrier dynamics and THz radiation in photoconductive antennas. Jpn. J. Appl. Phys. 39, 96–100 (2000)
Nazeri, M., Massudi, R.: Study of a large area THz antenna by using a finite difference time domain method and lossy transmission line. Semicond. Sci. Technol. 25, 045007 (2010)
Park, S.G., Jin, K.H., Yi, M., Ahn, J., Jeong, K.H.: Enhancement of THz pulse emission by optical nanoantenna. ACS Nano 6, 2026–2031 (2012)
Singh, A., Surdi, H., Nikesh, V.V., Prabhu, S.S., Dohler, G.H.: Improved efficiency of photoconductive THz emitters by increasing the effective contact length of electrodes. AIP Adv. 3, 122106 (2013)
Zolfagharloo Koohi, M., Neshat, M.: Evaluation of graphene-based THz photoconductive antennas. Sci. Iran. 23, 1299–1305 (2015)
Khiabani, N., Huang, Y., Garcia, L.E., Shen, Y., Lavado, A.: A novel sub-THz photomixer with nano trapezoidal electrodes. IEEE Trans. Terahertz Sci. Technol. 4, 501–508 (2014)
Nazeri, M., Sajedi, A.: Change of THz antenna spectrum when surrounding dielectric alters. Optik 183, 650–655 (2019)
Tani, M., Matsuura, S., Sakai, K., Nakashima, S.: Emission characteristics of photoconductive antennas based on low-temperature-grown GaAs and semi-insulating GaAs. Appl. Opt. 36, 7853–7859 (1997)
Duvillaret, L., Garet, F., Roux, J.-F., Coutaz, J.-L.: Analytical modeling and optimization of terahertz time-domain spectroscopy experiments using photoswitches as antennas. IEEE J. Sel. Quantum Electron. 7, 615–623 (2001)
Veselago, V.G.: The electrodynamics of substances with simultaneously negative value of epsilon and mu. Sov. Phys. Usp. 10(4), 509–514 (1968)
Balmaz, P., Martin, O.: Electromagnetic resonances in individual and coupled split-ring resonators. J. Appl. Phys. 92, 2929 (2002)
Smith, D.R., Vier, D.C., Koschny, Th, Soukoulis, C.M.: Electromagnetic parameter retrieval from inhomogeneous metamaterials. Phys. Rev. E 71, 036617 (2005)
Maier, S.A.: Plasmonics: fundamentals and applications. Springer, New York (2007)
Author information
Authors and Affiliations
Corresponding author
Additional information
Publisher's Note
Springer Nature remains neutral with regard to jurisdictional claims in published maps and institutional affiliations.
Rights and permissions
About this article
Cite this article
Alizadeh, A., Nazeri, M. & Sajedi Bidgoli, A. Enhancement of the frequency peak of terahertz photoconductive antennas using metamaterial (MTM) superstrate structures. J Comput Electron 19, 451–456 (2020). https://doi.org/10.1007/s10825-019-01407-2
Published:
Issue Date:
DOI: https://doi.org/10.1007/s10825-019-01407-2