首页|Terahertz Fabry-Perot Interferometer Constructed by Metallic Meshes with Micrometer Period and High Ratio of Linewidth/Period

Terahertz Fabry-Perot Interferometer Constructed by Metallic Meshes with Micrometer Period and High Ratio of Linewidth/Period

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  • Trans Tech Publications Ltd
The possibility of constructing terahertz Fabry-Perot interferometer using metallic meshes with micrometer period and high ratio of linewidth/period is investigated, and the effectivity of traditional equivalent circuit method is verified by FDTD method. Simulation shows that the reflectance and transmittance of this kind of meshes calculated by equivalent circuit method have considerable deviation from those obtained by vector analysis of FDTD, so equivalent circuit method can be used to roughly evaluate the properties of this kind of metallic meshes. By using a metallic mesh with the period of 5 micrometers and the ratio of linewidth/period of 0.8, a finesse larger than 1100 can be achieved while the peak transmittance is still larger than 0.2 for a Fabry-Perot interferometer. It is therefore concluded that a high-quality terahertz Fabry-Perot interferometer can be constructed by using metallic meshes with micrometer period and high ratio of linewidth/period.

fabry-perot interferometermetallic meshterahertzFDTD

Lu Zhengang、Tan Jiubin、Fan Zhigang

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Postdoctoral Research Station of Optical Engineering, Harbin Institute of Technology, Harbin, 150001, P. R. China Ultra-precision Optical & Electronic Instrument Engineering Center, Harbin Institute of Technology, Harbin, 150001, P. R. China

Ultra-precision Optical & Electronic Instrument Engineering Center, Harbin Institute of Technology, Harbin, 150001, P. R. China

Postdoctoral Research Station of Optical Engineering, Harbin Institute of Technology, Harbin, 150001, P. R. China

2010

10.4028/www.scientific.net/KEM.437.286

Key engineering materials

Key engineering materials

ISSN：1013-9826
年,卷(期)：2010.437
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