Huygens description of resonance phenomena in subwavelength hole arrays.
نویسندگان
چکیده
We develop a point-scattering approach to the plane-wave optical transmission of subwavelength metal hole arrays. We present a real-space description instead of the more conventional reciprocal-space description; this naturally produces interfering resonant features in the transmission spectra and makes explicit the tensorial properties of the transmission matrix. We give transmission spectra simulations for both square and hexagonal arrays; these can be evaluated at arbitrary angles and polarizations.
منابع مشابه
Diffracted evanescent wave model for enhanced and suppressed optical transmission through subwavelength hole arrays.
Transmission enhancements of order 1000 have been reported for subwavelength hole arrays in metal films and attributed to surface plasmon (SP) resonance. We show that the properly normalized enhancement factor is consistently less than 7, and that similar enhancements occur in nonmetallic systems that do not support SPs. We present a new model in which the transmission is modulated not by coupl...
متن کاملExtraordinary transmission and left-handed propagation in miniaturized stacks of doubly periodic subwavelength hole arrays.
Metallic plates embedded between dielectric slabs and perforated by rectangular arrays of subwavelength holes with a dense periodicity in one of the directions support extraordinary transmission (ET) phenomena, viz. strong peaks in the transmittance frequency dependence. Stacks of such perforated plates support ET phenomena with propagation along the stack axis that is characterized by the left...
متن کاملTerahertz transmission properties of thin, subwavelength metallic hole arrays.
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 ...
متن کاملResonant terahertz transmission in plasmonic arrays of subwavelength holes
A review of transmission properties of two-dimensional plasmonic structures in the terahertz regime is presented. Resonant terahertz transmission was demonstrated in arrays of subwavelength holes patterned on both metals and semiconductors. The effects of hole shape, hole dimensions, dielectric function of metals, array film thickness, and a dielectric overlayer were investigated by the state-o...
متن کاملRayleigh anomaly-surface plasmon polariton resonances in palladium and gold subwavelength hole arrays.
Surface plasmon polaritons (SPPs) and Rayleigh anomalies (RAs) are two characteristic phenomena exhibited by periodic grating structures made of plasmonic materials. For Au subwavelength hole arrays, SPPs and RAs from opposite sides of the film can interact under certain conditions to produce highly intense, narrow spectral features called RA-SPP resonances. This paper reports how RA-SPP effect...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
عنوان ژورنال:
- Journal of the Optical Society of America. A, Optics, image science, and vision
دوره 22 5 شماره
صفحات -
تاریخ انتشار 2005