Design and Analysis of Ultra-wideband and High Directive THz Photoconductive Vivaldi Antenna
关键词:
High directivity, log spiral antenna, photoconductive THz antenna, wideband摘要
In this work a novel design of an ultrawideband and highly directive Vivaldi photoconductive antenna (PCA) is reported for the first time for the THz sensing and imaging applications. The optical-to-THz conversion efficiency for the enhanced directivity of the reported PCA is enhanced by adding a hemispherical silicon-based lens with the PCA gold electrode and quartz substrate (εr = 3.78, tan δ = 0.0001). The optimization of the antenna design parameters is performed in CST MWS for the frequency range of 1-6 THz. The design antenna has UWB -10 dB impedance and 3-dB AR bandwidths of 6 THz, maximum directivity of 10 dBi and maximum total radiation efficiency of > 40%.
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参考
N. Zhu and R. W. Ziolkowski, "Photoconductive THz antenna designs with high radiation efficiency, high directivity, and high aperture efficiency," IEEE Transactions on Terahertz Science and Technology, vol. 3, no. 6, pp. 721-730, 2013.
P. U. Jepsen, D. G. Cooke, and M. Koch, "Terahertz spectroscopy and imaging – Modern techniques and applications," Laser & Photonics Reviews, vol. 5, no. 1, pp. 124-166, Jan. 2011.
I. Kasalynas, R. Venckevicius, and G. Valusis, "Continuous wave spectroscopic terahertz imaging with InGaAs bow-tie diodes at room temperature," IEEE Sensors Journal, vol. 13, no. 1, pp. 50-54, 2013.
Y. C. Shen, T. Lo, P. F. Taday, B. E. Cole, W. R. Tribe, and M. C. Kemp, "Detection and identification of explosives using terahertz pulsed spectroscopic imaging," Applied Physics Letters, vol. 86, no. 24, p. 241116, June 2005.
G. Rana, A. Bhattacharya, A. Gupta, D Ghindani, R. Jain, S. P. Duttagupta, and S. S. Prabhu, "A polarization-resolved study of nanopatterned photoconductive antenna for enhanced terahertz emission," IEEE Transactions on Terahertz Science and Technology, vol. 9, no. 2, pp. 193-199, 2019.
B. M. Fischer, M. Walther, and P. U. Jepsen, "Farinfrared vibrational modes of DNA components studied by terahertz time-domain spectroscopy," Physics in Medicine and Biology, vol. 47, no. 21, pp. 3807-3814, Oct. 2002.
K. Serita, S. Mizuno, H. Murakami, I. Kawayama, Y. Takahashi, M. Yoshimura, Y. Mori, J. Darmo, and M. Tonouchi, "Scanning laser terahertz nearfield imaging system," Optics Express, vol. 20, no. 12, pp. 12959-12965, June 2012.
S. Yu, B. J. Drouin, and J. C. Pearson, "Terahertz spectroscopy of the bending vibrations of acetylene 12C2H2," The Astrophysical Journal, vol. 705, no. 1, pp. 786-790, Oct. 2009.
W. Zhang, A. K. Azad, and D. Grischkowsky, "Terahertz studies of carrier dynamics and dielectric response of n-type, freestanding epitaxial GaN," Applied Physics Letters, vol. 82, no. 17, pp. 2841- 2843, Apr. 2003.
U. Deva and C. Saha, "Gain enhancement of photoconductive THz antenna using conical GaAs horn and Si lens," in 2016 International Symposium on Antennas and Propagation (APSYM), pp. 1-3, 2016.
A. Dhiflaoui, A. Yahyaoui, J. Yousaf, S. Bashir, B. Hakim, T. Aguili, H. Rmili, and R. Mittra, "Numerical analysis of wideband and high directive bowtie THz photoconductive antenna," Applied Computational Electromagnetic Society (ACES) Journal, vol. 35, no. 6, pp. 662-672, June 2020.
I. A. Glinskiy, R. A. Khabibullin, and D. S. Ponomarev, "Total efficiency of the optical-toterahertz conversion in photoconductive antennas based on LT-GaAs and In0.38Ga0.62As," Russian Microelectronics, vol. 46, no. 6, pp. 408-413, Nov. 2017.
A. Gupta, G. Rana, A. Bhattacharya, A. Singh, R. Jain, R. D. Bapat, S. P. Duttagupta, and S. S. Prabhu, "Enhanced optical-to-THz conversion efficiency of photoconductive antenna using dielectric nanolayer encapsulation," APL Photonics, vol. 3, no. 5, p. 051706, May 2018.
A. Jyothi, C. Saha, B. Ghosh, R. Kini, and C. Vaisakh, "Design of a gain enhanced THz bow-tie photoconductive antenna," in 2016 International Symposium on Antennas and Propagation (APSYM), pp. 1-3, 2016.
A. Dhiflaoui, A. Yahyaoui, J. Yousaf, T. Aguili, B. Hakim, H. Rmili, and R. Mittra, "Full wave numerical analysis of wideband and high directive log spiral THz photoconductive antenna," International Journal of Numerical Modelling: Electronic Networks, Devices and Fields, vol. n/a, no. n/a, p. e2761.
S.-G. Park, Y. Choi, Y.-J. Oh, and K.-H. Jeong, "Terahertz photoconductive antenna with metal nanoislands," Optics Express, vol. 20, no. 23, pp. 25530-25535, Nov. 2012.
I. Malhotra, K. R. Jha, and G. Singh, "Design of highly directive lens-less photoconductive dipole antenna array with frequency selective surface for terahertz imaging applications," Optik, vol. 173, pp. 206-219, Nov. 2018.
K. Han, Y. Park, S. Kim, H. Han, I. Park, and H. Lim, "A terahertz Yagi-Uda antenna for high input impedance," in 2008 33rd International Conference on Infrared, Millimeter and Terahertz Waves, pp. 1-2, 2008.
R. Singh, C. Rockstuhl, C. Menzel, T. P. Meyrath, M. He, H. Giessen, F. Lederer, and W. Zhang, "Spiral-type terahertz antennas and the manifestation of the Mushiake principle," Optics Express, vol. 17, no. 12, pp. 9971-9980, June 2009.
F. Sizov, O. Golenkov, I. Lysiuk, and A. ShevchikShekera, "THz and IR detectors in applications," in 2019 IEEE 8th International Conference on Advanced Optoelectronics and Lasers (CAOL), pp. 40-45, 2019.
C. Dong, W. Shi, F. Xue, and Y. Hang, "Multienergy valley scattering characteristics for a SIGaAs-based terahertz photoconductive antenna in linear mode," Applied Sciences, vol. 10, no. 1, p. 7, 2020.
M. Tani, S. Matsuura, K. Sakai, and S.-I. Nakashima, "Emission characteristics of photoconductive antennas based on low-temperature-grown GaAs YOUSAF, DHIFLAOUI, YAHYAOUI, HAKIM, ZAROUAN, ET AL.: HIGH DIRECTIVE THZ PHOTOCONDUCTIVE VIVALDI ANTENNA 1253 and semi-insulating GaAs," Applied Optics, vol. 36, no. 30, pp. 7853-7859, Oct. 1997.
N. M. Burford and M. O. El-Shenawee, Review of Terahertz Photoconductive Antenna Technology, (J. Optical Engineering) SPIE, pp. 1-20, 2017.
L. Hou and W. Shi, "An LT-GaAs terahertz photoconductive antenna with high emission power, low noise, and good stability," IEEE Transactions on Electron Devices, vol. 60, no. 5, pp. 1619-1624, 2013.
A. Jooshesh, F. Fesharaki, V. Bahrami-Yekta, M. Mahtav, T. Tiedje, T. E. Darcie, and R. Gordon, "Plasmon-enhanced LT-GaAs/AlAs heterostructure photoconductive antennas for sub-bandgap terahertz generation," Optics Express, vol. 25, no. 18, pp. 22140-22148, Sep. 2017.
M. S. Kong, J. S. Kim, S. P. Han, N. Kim, K. Moon, K. H. Park, and M. Y. Jeon, "Terahertz radiation using log-spiral-based low-temperaturegrown InGaAs photoconductive antenna pumped by mode-locked Yb-doped fiber laser," Optics Express, vol. 24, no. 7, pp. 7037-7045, Apr. 2016.
Q. Yu, J. Gu, Q. Yang, Y. Zhang, Y. Li, Z. Tian, C. Ouyang, J. Han, J. F. O'Hara, and W. Zhang, "All-dielectric meta-lens designed for photoconductive terahertz antennas," IEEE Photonics Journal, vol. 9, no. 4, pp. 1-9, 2017.
F. Formanek, M.-A. Brun, T. Umetsu, S. Omori, and A. Yasuda, "Aspheric silicon lenses for terahertz photoconductive antennas," Applied Physics Letters, vol. 94, no. 2, p. 021113, Jan. 2009.
P. J. Gibson, "The Vivaldi aerial," in 1979 9th European Microwave Conference, pp. 101-105, 1979.