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Spatiotemporal shaping and filtering of terahertz pulses through metal slits with finite thickness

Zhang Tong-Yi Zhu Shao-Lan Fan Wen-Hui Liu Hai-Liang

Spatiotemporal shaping and filtering of terahertz pulses through metal slits with finite thickness

Zhang Tong-Yi, Zhu Shao-Lan, Fan Wen-Hui, Liu Hai-Liang
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  • The characteristics of spatiotemporal shaping and filtering of terahertz (THz) pulses passing through metal slits with finite thickness have been investigated by employing the finite-difference time-domain (FDTD) method. It is shown that this diffraction-based quasi-optical technique has a good influence on shaping and filtering of transverse magnetic(TM) polarized THz pulse, while has no effect on transverse electric(TE) polarized THz pulse. Furthermore, the numerical simulation results have been interpreted qualitatively by the planar waveguide theory and can be employed in the relevant experiments.
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  • Received Date:  14 May 2008
  • Accepted Date:  23 October 2008
  • Published Online:  20 June 2009

Spatiotemporal shaping and filtering of terahertz pulses through metal slits with finite thickness

  • 1. (1)中国科学院西安光学精密机械研究所瞬态光学与光子技术国家重点实验室,西安 710119; (2)中国科学院西安光学精密机械研究所瞬态光学与光子技术国家重点实验室,西安 710119;中国科学院研究生院,北京 100049

Abstract: The characteristics of spatiotemporal shaping and filtering of terahertz (THz) pulses passing through metal slits with finite thickness have been investigated by employing the finite-difference time-domain (FDTD) method. It is shown that this diffraction-based quasi-optical technique has a good influence on shaping and filtering of transverse magnetic(TM) polarized THz pulse, while has no effect on transverse electric(TE) polarized THz pulse. Furthermore, the numerical simulation results have been interpreted qualitatively by the planar waveguide theory and can be employed in the relevant experiments.

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