Acta Optica Sinica, Volume. 32, Issue 11, 1130001(2012)

Numerical Simulation of Terahertz Transmission through Rectangular Hole of Metallic Structure on Substrate with Different Thicknesses

Zhang Gaohui* and Zhao Guozhong
Author Affiliations
  • [in Chinese]
  • show less

    The terahertz transmission characteristics of the rectangular-hole metal structure on different materials and thicknesses of substrates are studied based on the finite difference time domain method. The results show that there exists the frequency selectivity in THz transmission spectrum of the rectangular-hole metallic structure. The frequency selectivity provides the basis of the terahertz filter. In practical applications, these metallic microstructures often need to be deposited on the substrates. Obviously, the substrate material and its thicknesses have influence on the terahertz transmission characteristics of metallic microstructures. We investigate how the different substrate materials and its thicknesses affect the terahertz transmission of entire structure. By numerical simulation, it is found that the transmission peak shifts into the lower frequency with increasing of the substrate thicknesses. Comparing Si and polytetrafluoroethylene (PTFE) as the substrate materials, it is shown that peak shift of Si substrates with high dielectric constant is more obvious.

    Tools

    Get Citation

    Copy Citation Text

    Zhang Gaohui, Zhao Guozhong. Numerical Simulation of Terahertz Transmission through Rectangular Hole of Metallic Structure on Substrate with Different Thicknesses[J]. Acta Optica Sinica, 2012, 32(11): 1130001

    Download Citation

    EndNote(RIS)BibTexPlain Text
    Save article for my favorites
    Paper Information

    Category: Spectroscopy

    Received: May. 2, 2012

    Accepted: --

    Published Online: Aug. 8, 2012

    The Author Email: Gaohui Zhang (zhang0017.cool@163.com)

    DOI:10.3788/aos201232.1130001

    Topics