| Original Articles |
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Transmission Properties of THz Radiation Pulses through Very Deep Zero-Order Metallic Gratings |
| XING Qi-Rong1,2;LI Shu-Xin1,2;ZHANG Wei-Li3;LANG Li-Ying1,2;MAO Fang-Lin1,2;XU Shi-Xiang1,2;CHAI Lu1,2;WANG Qing-Yue1,2 |
| 1Ultrafast Laser Laboratory, College of Precision Instrument & Optoelectronics Engineering,Tianjin University, Tianjin 300072
2Key Laboratory of Opto-electronics Information and Technical Science (Ministry of Education), Tianjin University, Tianjin 300072
3School of Electrical and Computer Engineering, Oklahoma State University, Stillwater, Oklahoma 74078, USA |
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| Cite this article: |
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XING Qi-Rong, LI Shu-Xin, ZHANG Wei-Li et al 2005 Chin. Phys. Lett. 22 1824-1824 |
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Abstract Very deep zero-order metallic grating structures are processed to study the transmission properties of THz radiation pulses. The experiments have been performed with two samples. The delay of the THz pulses and the corresponding resonantly enhanced transmission spectra through the samples are observed. To explain the extraordinary transmission we have treated the samples as Fabry--Perot resonators through resonant excitation of the coupled surface plasmon polaritons filled in the cavities between the metal slats. The experimental results are in reasonable agreement with the numerical simulation. Our results show that THz-time-domain spectroscopy may be an effective technique for studying the optical properties of various THz microstructured devices.
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| Keywords:
98.85.Gn
42.65.-k
42.65.Re
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Published: 01 July 2005
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| PACS: |
98.85.Gn
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42.65.-k
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(Nonlinear optics)
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42.65.Re
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(Ultrafast processes; optical pulse generation and pulse compression)
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