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Influence of groove in metallic subwavelength slit on transmission properties

Zheng Xian-Hua Zhang Yan Wang Ying-Qi

Influence of groove in metallic subwavelength slit on transmission properties

Zheng Xian-Hua, Zhang Yan, Wang Ying-Qi
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  • Received Date:  17 February 2009
  • Accepted Date:  03 April 2009
  • Published Online:  20 December 2009

Influence of groove in metallic subwavelength slit on transmission properties

  • 1. (1)首都师范大学物理系,北京市太赫兹波谱与成像重点实验室,太赫兹光电子学教育部重点实验室,北京 100048; (2)首都师范大学物理系,北京市太赫兹波谱与成像重点实验室,太赫兹光电子学教育部重点实验室,北京 100048;哈尔滨工业大学物理系,哈尔滨 150001

Abstract: The influence of the structure and position of groove in a two-dimensional metallic subwavelength slit on transmission properties has been studied with the finite-difference time-domain method. The whole structure of slit with perpendicular groove could be regard as a LC oscillation circuit. The capacitance and inductance of this oscillation circuit will be altered when the structure of groove varies,so that the resonant transmission peaks shift. And the drive source of circuit changes when the position of groove moves along the slit, as a result the distribution of electromagnetic filed in the structure is changed also. So the resonant transmission peaks are split. In this paper, the change of resonant transmission peaks as each parameter of the groove changes is analyzed with the principle of LC resonance.

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