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Proceedings Paper

Abnormal enhancement of terahertz signal by using a hole
Author(s): Dongmei Zhao; Yulei Shi; Qingli Zhou; Lei Li; Cunlin Zhang
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Paper Abstract

Huygens-Fresnel principle and half-wave method are usually used to explain the diffraction effect as the light passing through a hole. We present a new simple method to enhance the terahertz signal intensity by using a small hole. We found that in the terahertz time-domain spectroscopy, the terahertz signal enhances by 13.87% as a hole with certain size is put in a certain position of the terahertz beam path. This effect can be fully explained by using Huygens Fresnel principle. Therefore, in the condition of terahertz emitter and detector are unchanged, by using this method to enhance the terahertz signals is of great significance.

Paper Details

Date Published: 4 November 2010
PDF: 8 pages
Proc. SPIE 7854, Infrared, Millimeter Wave, and Terahertz Technologies, 78542S (4 November 2010); doi: 10.1117/12.869646
Show Author Affiliations
Dongmei Zhao, Capital Normal Univ. (China)
Key Lab. of Terahertz Optoelectronics, Ministry of Education (China)
Yulei Shi, Capital Normal Univ. (China)
Key Lab. of Terahertz Optoelectronics, Ministry of Education (China)
Qingli Zhou, Capital Normal Univ. (China)
Key Lab. of Terahertz Optoelectronics, Ministry of Education (China)
Lei Li, Capital Normal Univ. (China)
Key Lab. of Terahertz Optoelectronics, Ministry of Education (China)
Cunlin Zhang, Capital Normal Univ. (China)
Key Lab. of Terahertz Optoelectronics, Ministry of Education (China)


Published in SPIE Proceedings Vol. 7854:
Infrared, Millimeter Wave, and Terahertz Technologies
Cunlin Zhang; Xi-Cheng Zhang; Peter H. Siegel; Li He; Sheng-Cai Shi, Editor(s)

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