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11 papers · 2 filters
Design of a hybrid silicon-plasmonic co-propagant integrated coherent perfect absorber
Simone Zanotto, Andrea Melloni
By a hybrid integration of plasmonic and dielectric waveguide concepts, it is shown that coherent perfect absorption can be achieved in a co-propagant coupler geometry. The device…
Transparency in nonlinear frequency conversion
Stefano Longhi
Suppression of wave scattering and the realization of transparency effects in engineered optical media and surfaces have attracted great attention in the past recent years. In this…
Half-spectral unidirectional invisibility in non-Hermitian periodic optical structures
Stefano Longhi
The phenomenon of half-spectral unidirectional invisibility is introduced for one-dimensional periodic optical structures with tailored real and imaginary refractive index distribu…
Wave reflection in dielectric media obeying spatial Kramers-Kronig relations
Stefano Longhi
In a recent work, S.A.R. Horsley and coworkers [Nature Photon 9, 436-439 (2015)] showed rather interestingly that planar dielectric media, for which the real and imaginary parts of…
Localization without recurrence and pseudo-Bloch oscillations in optics
Stefano Longhi
Dynamical localization, i.e. the absence of secular spreading of a quantum or classical wave packet, is usually associated to Hamiltonians with purely point spectrum, i.e. with a n…
Tunable dynamic Fano resonances in coupled-resonant optical waveguide
Stefano Longhi
A route toward lineshape engineering of Fano resonances in photonic structures is theoretically proposed, which uses dynamic modulation of the refractive index of a microcavity. Th…