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Communication Dans Un Congrès Année : 2009

Sub-wavelength hole arrayed stack : towards terahertz high resolution imaging systems

Résumé

We report on the electromagnetic response of a stack of sub-wavelength hole metal arrays. The samples were designed for exhibiting left-handed dispersion branches under normal incidence and their transmissivity were optimized via the fabrication of elliptic-shaped holes. An experimental evidence of ground left handed dispersion branches was found around 0.45 THz by time-domain terahertz spectroscopy, supported by full wave simulations. The insertion losses are 3 dB for a five-layer structure, this good level being explained by successful impedance matching. This result paves the way of high transmissivity high resolution focusing devices.
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Dates et versions

hal-00474414 , version 1 (20-04-2010)

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Charles Croënne, Frédéric Garet, Jorge Carbonell, Eric Lheurette, Karine Blary, et al.. Sub-wavelength hole arrayed stack : towards terahertz high resolution imaging systems. 39th European Microwave Conference, EuMC 2009, Sep 2009, Rome, Italy. pp.626-629, ⟨10.23919/EUMC.2009.5296156⟩. ⟨hal-00474414⟩
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