TITLE

Enhanced zero-order transmission of terahertz radiation pulses through very deep metallic gratings with subwavelength slits

AUTHOR(S)
Qirong Xing; Shuxin Li; Zhen Tian; Dong Liang; Ning Zhang; Liying Lang; Lu Chai; Qingyue Wang
PUB. DATE
July 2006
SOURCE
Applied Physics Letters;7/24/2006, Vol. 89 Issue 4, p041107
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
Very deep metallic grating structures with subwavelength slits are processed to study the transmission properties of terahertz radiation pulses. The experiments have been performed with two samples. The delay of the terahertz pulses and the corresponding enhanced unresonant transmission spectra through the samples are observed. A simple interpretation is presented based on the combination of zero-order diffraction of the gratings with the coupling of the surface plasmon polaritons formed on the top and bottom of the gratings. The experimental results are in good agreement with theoretical calculations.
ACCESSION #
21871653

 

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