Search Results - "Ciattoni, A."

Optically induced metal-to-dielectric transition in Epsilon-Near-Zero metamaterials by Kaipurath, R. M., Pietrzyk, M., Caspani, L., Roger, T., Clerici, M., Rizza, C., Ciattoni, A., Di Falco, A., Faccio, D.

“…Epsilon-Near-Zero materials exhibit a transition in the real part of the dielectric permittivity from positive to negative value as a function of wavelength…”
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Design Optimisation of Plasmonic Metasurfaces for Mid-Infrared High-Sensitivity Chemical Sensing by De Marcellis, A., Palange, E., Janneh, M., Rizza, C., Ciattoni, A., Mengali, S.

“…In this paper, we report on a general method to optimise the optical characteristics of 2D-arrays of plasmonic gold nanoantennas performing as band-pass filter…”
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Transverse power flow reversing of guided waves in extreme nonlinear metamaterials by Ciattoni, A, Rizza, C, Palange, E

“…We theoretically prove that electromagnetic beams propagating through a nonlinear cubic metamaterial can exhibit a power flow whose direction reverses its sign…”
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Multistability at arbitrary low optical intensities in a metal-dielectric layered structure by Ciattoni, A, Rizza, C, Palange, E

“…We show that a nonlinear metal-dielectric layered slab of subwavelength thickness and very small average dielectric permittivity displays optical multistable…”
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Electro-activation and electro-morphing of photorefractive funnel waveguides by Pierangelo, A, Ciattoni, A, Palange, E, Agranat, A J, DelRe, E

“…We demonstrate the electro-activation of funnel waveguides through the quadratic electro-optic effect in paraelectric potassiumlithium- tantalate-niobate. This…”
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Optical hollow-core waves in nonlinear Epsilon-Near-Zero metamaterials by Rizza, C., Ciattoni, A., Palange, E.

“…We investigate non-diffracting hollow-core nonlinear optical waves propagating in a layered nanoscaled metal-dielectric structure characterized by a very small…”
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Highly nonparaxial (1+1)-D subwavelength optical fields by Rizza, C, Ciattoni, A, Palange, E

“…A general approach for describing (1+1)-D subwavelength optical field whose waist is much smaller than the wavelength is presented. Exploiting the vectorial…”
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Efficient second-harmonic generation in micrometer-thick slabs with indefinite permittivity by Ciattoni, A., Spinozzi, E.

“…We theoretically predict efficient optical second-harmonic generation (SHG) from a micrometer-thick slab consisting of a quadratic nonlinear anisotropic medium…”
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Wiggling and bending-free micron-sized solitons in periodically biased photorefractives by Ciattoni, A, DelRe, E, Marini, A, Rizza, C

“…Considering nonlinear optical propagation through photore-fractive crystals in which the bias voltage is periodically modulated along the propagation…”
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Counterpropagating spatial solitons in reflection gratings with a longitudinally modulated Kerr nonlinearity by Ciattoni, A, Rizza, C, DelRe, E, Palange, E

“…We investigate quasi-Bragg-matched counterpropagating spatial solitons in a reflection grating in the presence of a longitudinally modulated Kerr nonlinearity…”
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Dynamically reconfigurable metamaterials for shielding and absorption in the GHz range by de Paulis, F., Rizza, C., Ciattoni, A., Palange, E., Orlandi, A.

“…A dynamically reconfigurable metamaterial is presented where the complex frequency dependent permittivity of a silicon substrate is modified in the GHz range…”
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Counterpropagating nondiffracting beams through reflection gratings by Ciattoni, A, Rizza, C, Delre, E, Palange, E

“…We investigate the counterpropagation of paraxial non-diffracting optical beams through a medium hosting a bulk reflection grating in the quasi-Bragg matching…”
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Vectorial free-space optical propagation: a simple approach for generating all-order nonparaxial corrections by Ciattoni, A., Crosignani, B., Di Porto, P.

“…We present a rigorous approach to the problem of fully vectorial nonparaxial propagation in free space. This treatment allows us to generalize in a simple way…”
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Bertrand's Paradox: A Physical Way out along the Lines of Buffon's Needle Throwing Experiment by Di Porto, P, Crosignani, B, Ciattoni, A, Liu, H. C

“…Bertrand's paradox (Bertrand 1889 "Calcul des Probabilites" (Paris: Gauthier-Villars)) can be considered as a cautionary memento, to practitioners and students…”
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Hermite-Gauss beams in uniaxially anisotropic crystals by Cincotti, G., Ciattoni, A., Palma, C.

“…Propagation of Hermite-Gauss beams of any order along the optical axis of a uniaxially anisotropic crystal is investigated. Starting from a general approach…”
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Pairing space-charge field conditions with self-guiding for the attainment of circular symmetry in photorefractive solitons by DelRe, E., De Masi, G., Ciattoni, A., Palange, E.

“…By means of a comparative study, we identify a specific physical mechanism that leads to circular-symmetric two-dimensional photorefractive solitons, and…”
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Photorefractive solitons of arbitrary and controllable linear polarization determined by the local bias field by D'Ercole, A, Pierangelo, A, Palange, E, Ciattoni, A, Agranat, A J, Del Re, E

“…We discuss and experimentally demonstrate a scheme to achieve photorefractive solitons of arbitrary linear polarization using the quadratic electro-optic…”
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Separating polarization components through the electro-optic read-out of photorefractive solitons by Pierangelo, A, Delre, E, Ciattoni, A, Biagi, G, Palange, E, Agranat, A

“…Analyzing the propagation dynamics of a light beam of arbitrary linear input polarization in an electro-activated photorefractive soliton we are able to…”
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Miniaturization and embedding of soliton-based electro-optically addressable photonic arrays by D’Ercole, A., Palange, E., DelRe, E., Ciattoni, A., Crosignani, B., Agranat, A. J.

“…We achieved the soliton-based miniaturized integration of electro-optic devices in a photorefractive paraelectric bulk crystal, by driving self-trapping…”
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Thermally induced phase transition in crystalline lead phthalocyanine films investigated by XRD and atomic force microscopy by Ottaviano, L, Lozzi, L, Phani, A.R, Ciattoni, A, Santucci, S, Di Nardo, S

“…Lead phthalocyanine films have been deposited at room temperature on to silicon substrates and than annealed in high vacuum at different temperatures. The…”
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