TITLE

Enhanced transmission of THz radiation through sub-wavelength, asymmetry metallic hole arrays

AUTHOR(S)
Qiu, M. X.; Ruan, S. C.; Su, H.; Wang, C. D.; Zhang, M.; Wang, R. L.; Liang, H. W.
PUB. DATE
October 2011
SOURCE
Applied Physics Letters;10/10/2011, Vol. 99 Issue 15, p151501
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
Strongly enhanced transmission of terahertz radiation pulses through asymmetry rectangular hole arrays with various hole lengths are obtained experimentally. The transmission magnitudes increase and their positions shift to lower frequency with increasing hole length. The maximum transmittance peak is observed for the sample with a hole length of 400 μm. Apparent angle-dependent behavior is observed in the transmission spectra of the 200 × 400 μm2 hole array, which due to the size effect of the rectangular hole along the two orthogonal axes. The resonance frequencies are deduced according to the surface plasmon polaritons modes. Our experiment results closely match the theoretical calculations.
ACCESSION #
66590239

 

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