Transmission Properties of Metallic Grating with Subwavelength Slits in THz Frequency Region

Dong Liang; Qirong Xing; Zhen Tian; Changlei Wang; Weili Zhang; Jianqiang Gu; Yanfeng Li; Lu Chai; Qingyue Wang; Aleksei Zheltikov

doi:10.1155/2007/63139

Active and Passive Electronic Components (Jan 2007)

Transmission Properties of Metallic Grating with Subwavelength Slits in THz Frequency Region

Dong Liang,
Qirong Xing,
Zhen Tian,
Changlei Wang,
Weili Zhang,
Jianqiang Gu,
Yanfeng Li,
Lu Chai,
Qingyue Wang,
Aleksei Zheltikov

Affiliations

Dong Liang: Center for THz waves, Ultrafast Laser Laboratory, College of Precision Instrument and Optoelectronics Engineering, and Key Laboratory of Opto-electronics Information and Technical Science (Ministry of Education), Tianjin University, Tianjin 300072, China
Qirong Xing: Center for THz waves, Ultrafast Laser Laboratory, College of Precision Instrument and Optoelectronics Engineering, and Key Laboratory of Opto-electronics Information and Technical Science (Ministry of Education), Tianjin University, Tianjin 300072, China
Zhen Tian: Center for THz waves, Ultrafast Laser Laboratory, College of Precision Instrument and Optoelectronics Engineering, and Key Laboratory of Opto-electronics Information and Technical Science (Ministry of Education), Tianjin University, Tianjin 300072, China
Changlei Wang: Center for THz waves, Ultrafast Laser Laboratory, College of Precision Instrument and Optoelectronics Engineering, and Key Laboratory of Opto-electronics Information and Technical Science (Ministry of Education), Tianjin University, Tianjin 300072, China
Weili Zhang: School of Electrical and Computer Engineering, Oklahoma State University, Stillwater, OK 74078, USA
Jianqiang Gu: Center for THz waves, Ultrafast Laser Laboratory, College of Precision Instrument and Optoelectronics Engineering, and Key Laboratory of Opto-electronics Information and Technical Science (Ministry of Education), Tianjin University, Tianjin 300072, China
Yanfeng Li: Center for THz waves, Ultrafast Laser Laboratory, College of Precision Instrument and Optoelectronics Engineering, and Key Laboratory of Opto-electronics Information and Technical Science (Ministry of Education), Tianjin University, Tianjin 300072, China
Lu Chai: Center for THz waves, Ultrafast Laser Laboratory, College of Precision Instrument and Optoelectronics Engineering, and Key Laboratory of Opto-electronics Information and Technical Science (Ministry of Education), Tianjin University, Tianjin 300072, China
Qingyue Wang: Center for THz waves, Ultrafast Laser Laboratory, College of Precision Instrument and Optoelectronics Engineering, and Key Laboratory of Opto-electronics Information and Technical Science (Ministry of Education), Tianjin University, Tianjin 300072, China
Aleksei Zheltikov: Physics Department and International Laser Center, M.V. Lomonosov Moscow State University, Moscow 119992, Russia

DOI: https://doi.org/10.1155/2007/63139
Journal volume & issue: Vol. 2007

Abstract

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This paper presents a fully experimental and theoretical study on transmission properties of a deep metallic grating with subwavelength slits in THz frequency region by using THz time domain spectroscopy (THz-TDS). The grating exposed to p-polarized incident wave exhibits enhanced nonresonant transmission in the long-wavelength region where the incident wavelength is larger than the grating period. Wood anomalies are observed when the wavelength is comparable to the grating period. Strict theory is given to explain the experimental results and the two are in good agreement. It is proposed that the Wood dips may be considered a criterion and a tool to judge and control the uniformity or fabricating accuracy of the grating period.

Published in Active and Passive Electronic Components

ISSN: 0882-7516 (Print); 1563-5031 (Online)
Publisher: Wiley
Country of publisher: United Kingdom
LCC subjects: Technology: Electrical engineering. Electronics. Nuclear engineering
Website: https://onlinelibrary.wiley.com/journal/5080

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