Manipulation of Multi-Dimensional Plasmonic Spectra for Information

Chen, Wei Ting; Wu, Pin Chieh; Chen, Chen Jung; Weng, Chun Jen; Yen, Ta-Jen; Kuan, Chen‐Hsiang; Mansuripur, Masud; Tsai, Din Ping

doi:10.1364/isom_ods.2011.otud7

Cited by 2 publications

(1 citation statement)

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“…21, [27][28][29][30][31][32][33][34] We have recently demonstrated 27 that an intense single pulse of a UV laser (ArF,193 nm) drastically alters the structure of plasmonic AlN:Ag templates at the nanoscale, causing Ag NP enlargement and reshaping within a concurrently recrystallizated AlN matrix. These structural changes render a strong reflectance contrast between treated and untreated regions, and as a result, a color-sensitive optical encoding scheme was proposed.…”

Section: Introductionmentioning

confidence: 99%

Laser-matter interactions, phase changes and diffusion phenomena during laser annealing of plasmonic AlN:Ag templates and their applications in optical encoding

Siozios

Koutsogeorgis

Lidorikis

et al. 2015

J. Phys. D: Appl. Phys.

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ABSTRACT.Nanocomposite thin films incorporating silver nanoparticles are emerging as photosensitive templates for optical encoding applications. However, a deep understanding of the fundamental physicochemical mechanisms occurring during laser-matter interactions is still lacking. In this work, the photosensitivity of AlN:Ag plasmonic nanocomposites is thoroughly examined and a series of UV laser annealing parameters, such as wavelength, fluence and the number of pulses are investigated. We report and study effects such as the selective crystallization of the AlN matrix, the enlargement of the Ag nanoparticle inclusions by diffusion of laser-heated Ag and the outdiffusion of Ag to the film's surface. Detailed optical calculations contribute to the identification and understanding of the aforementioned physical mechanisms and of their dependency on the laser processing parameters. We are then able to predetermine the plasmonic response of processed AlN:Ag nanocomposites and demonstrate its potential by means of optically encoding an overt or covert cryptographic pattern.

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Section: Introductionmentioning

confidence: 99%

Laser-matter interactions, phase changes and diffusion phenomena during laser annealing of plasmonic AlN:Ag templates and their applications in optical encoding

Siozios

Koutsogeorgis

Lidorikis

et al. 2015

J. Phys. D: Appl. Phys.

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Magnetic plasmon induced transparency in three-dimensional metamolecules

Chen

Yang

et al. 2012

Nanophotonics

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In a laser-driven atomic quantum system, a continuous state couples to a discrete state resulting in quantum interference that provides a transmission peak within a broad absorption profi le the so-called electromagnetically induced transparency (EIT). In the fi eld of plasmonic metamaterials, the subwavelength metallic structures play a role similar to atoms in nature. The interference of their near-fi eld coupling at plasmonic resonance leads to a plasmon induced transparency (PIT) that is analogous to the EIT of atomic systems. A sensitive control of the PIT is crucial to a range of potential applications such as slowing light and biosensor. So far, the PIT phenomena often arise from the electric resonance, such as an electric dipole state coupled to an electric quadrupole state. Here we report the fi rst three-dimensional photonic metamaterial consisting of an array of erected U-shape plasmonic gold nanostructures that exhibits PIT phenomenon with magnetic dipolar interaction between magnetic meta molecules. We further demonstrate using a numerical simulation that the coupling between the different excited pathways at an intermediate resonant wavelength allows for a π phase shift resulting in a destructive interference. A classical RLC circuit was also proposed to explain the coupling effects between the bright and dark modes of EIT-like electromagnetic spectra. This work paves a promising approach to achieve magnetic plasmon devices.

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Manipulation of Multi-Dimensional Plasmonic Spectra for Information

Cited by 2 publications

References 0 publications

Laser-matter interactions, phase changes and diffusion phenomena during laser annealing of plasmonic AlN:Ag templates and their applications in optical encoding

Laser-matter interactions, phase changes and diffusion phenomena during laser annealing of plasmonic AlN:Ag templates and their applications in optical encoding

Magnetic plasmon induced transparency in three-dimensional metamolecules

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