title: Terahertz transmission properties of thin, subwavelength metallic hole arrays.
abstract: We present experimental results of the transmission magnitude and phase change of terahertz pulses through thin metallic films patterned with subwavelength hole arrays on silicon wafers. Terahertz time-domain spectroscopy measurements reveal a sharp phase peak centered on the surface plasmon resonance. Correspondingly, and consistent with the Kramers-Kronig relations, the measured transmission magnitude has the shape of the derivative of this peak. In addition, we determine that the aperture shape has a notable effect on the transmission properties of two-dimensional hole arrays.
authors.affiliation: School of Electrical and Computer Engineering, Oklahoma State University, Stillwater, Oklahoma 74078, USA.
authors.forename: Dongxia
authors.initials: D
authors.lastname: Qu
authors.forename: D
authors.initials: D
authors.lastname: Grischkowsky
authors.forename: Weili
authors.initials: W
authors.lastname: Zhang