Dual-band infrared single-layer metallodielectric photonic crystals

Abstract

Articles you may be interested inFaraday rotation of a magnetophotonic crystal with the dual-cavity structure J. Appl. Phys. 107, 09A946 (2010); 10.1063/1.3365431 Photonic bands in two-dimensional metallodielectric photonic crystals composed of metal coated cylinders

Transmission properties of dual-band cross-dipole fractal slit arrays for near- and mid-infrared wavelengths

“…We contribute the redshift of the transmission peak to the loading of the primary crosses by the secondary crosses. 18 The same conclusion holds for the arrays of secondary single 0.8 m long cross dipole slits where a single transmission peak with the transmission about 50% is centered at 1.7 m. The comparison between Fig. 2 and Fig.…”

“…17 The two-stage cross-dipole fractal metallic elements have been demonstrated to exhibit far-infrared dual-band response. 18 In this paper, we study transmission properties of the periodic arrays of the crossdipole fractal slits in the near-and mid-infrared region both experimentally and theoretically. In these frequency regimes, fascinating physical phenomena associated with surface plasmon resonance and propagation of plasmonic waves in metallic nanostrutures have been investigated extensively in recent years.…”

“…The reason for such a large intensity difference in these two structures is that the coupling between elements of a particular period is extremely sensitive to the incident wavelength. 18 It has been proved that the lattice constant plays an important role in the position of transmission peaks. [19][20][21] Our experimental and theoretical results clearly show that the lattice constant also plays an im- portant role in determining the transmission peak position for the current complicated fractal structures.…”

Multiplex-bands spectral characteristics of infrared perfect absorber metamaterials

“…Especially, for the photodetection applications in the field of mid-infrared spectroscopy, it is of significant interest to monitor simultaneously multiple spectral fingerprint characteristic of different chemical or biological molecular regions 14 , which is critical to the accurate identification and detection of complex biological entities 15 . Recent efforts to achieve metamaterial absorbers with dual-or multi-band absorption characteristics were investigated 14,16,17 . Especially in infrared region, the multiplex wavelength photodetection have been developed for their potential applications in military 4,18,19 .…”

Infrared Liquid Crystal Tunable Frequency Selective Surfaces

“…Previous research has demonstrated the synthesis of frequency selective surfaces (FSS) for use as infrared (IR) band-reject and band-pass filters with applications in various IR signal-processing devices. Single-layer metallodielectric FSS have been synthesized and fabricated using fractal and genetic algorithm techniques to exhibit multiband filter responses in the far-IR [1,2]. Fabrication constraints were developed and incorporated within the genetic algorithm synthesis procedure to achieve designs that could be accurately fabricated [3].…”