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7 papers · 1 filter
Enhanced Transmission and Second Harmonic Generation from Subwavelength Slits on Metal Substrates
M. A. Vincenti, M. De Sario, V. Petruzzelli +7
We theoretically investigate second harmonic generation that originates from the nonlinear, magnetic Lorentz force term from single and multiple apertures carved on thick, opaque m…
Anomalous Momentum States, Non-Specular Reflections, and Negative Refraction of Phase-Locked, Second Harmonic Pulses
Vito Roppo, Marco Centini, Domenico de Ceglia +5
We simulate and discuss novel spatio-temporal propagation effects that relate specifically to pulsed, phase-mismatched second harmonic generation in a negative index material havin…
Tailoring Metallodielectric Structures for Super Resolution and Superguiding Applications in the Visible and Near IR Ranges
D. de Ceglia, M. A. Vincenti, M. G. Cappeddu +6
We discuss propagation effects in realistic, transparent, metallo-dielectric photonic band gap structures in the context of negative refraction and super-resolution in the visible…
Second harmonic generation from metallo-dielectric multilayer photonic band gap structures
M. C. Larciprete, A. Belardini, M. G. Cappeddu +6
We experimentally and theoretically investigate the second order nonlinear optical response of metallo-dielectric multilayer structures composed of Ag and Ta2O5 layers, deposited b…
Wide-band optical field concentrator for low-index core propagation
D. de Ceglia, M. De Sario, A. D'Orazio +4
We propose a novel chirped structure consisting of a low index polymer core bounded by modulated multilayer claddings, to realize an optical field concentrator with virtually zero…
Analysis of second harmonic generation in photonic-crystal-assisted waveguides
Antonella D'Orazio, Domenico de Ceglia, Marco De Sario +3
We study second harmonic generation in a planar dielectric waveguide having a low-index, polymer core layer, bounded by two multilayer stacks. This geometry allows exceptionally st…