Zobrazeno 1 - 10
of 519
pro vyhledávání: '"Akozbek, N."'
Autor:
Scalora, M., Hallman, K., Mukhopadhyay, S., Pruett, S., Zappa, D., Comini, E., de Ceglia, D., Vincenti, M. A., Akozbek, N., Trull, J., Cojocaru, C.
By uncovering novel aspects of second harmonic generation in aluminum we show that there are unusual and remarkable consequences of resonant absorption, namely an unexpectedly critical role that bound electrons play for light-matter interactions acro
Externí odkaz:
http://arxiv.org/abs/2403.11902
Autor:
Rodriguez-Sune, L., Trull, J., Akozbek, N., de Ceglia, D., Vincenti, M. A., Scalora, M., Cojocaru, C.
The predominant methods currently used to determine nonlinear optical constants like the nonlinear refractive index n2 or chi3 rely mostly on experimental, open and closed z-scan techniques and beam deflection methods. While these methods work well w
Externí odkaz:
http://arxiv.org/abs/2107.11826
Autor:
Rodríguez-Suné, L., Trull, J., Cojocaru, C., Akozbek, N., de Ceglia, D., Vincenti, M. A., Scalora, M.
Understanding how light interacts at the nanoscale with metals, semiconductors, or ordinary dielectrics is pivotal if one is to properly engineer nano-antennas, filters and, more generally, devices that aim to harness the effects of new physical phen
Externí odkaz:
http://arxiv.org/abs/2008.06712
Autor:
Scalora, M., Trull, J., Cojocaru, C., Vincenti, M. A., Carletti, L., de Ceglia, D., Akozbek, N., De Angelis, C.
Using a hydrodynamic approach we examine bulk- and surface-induced second and third harmonic generation from semiconductor nanowire gratings having a resonant nonlinearity in the absorption region. We demonstrate resonant, broadband and highly effici
Externí odkaz:
http://arxiv.org/abs/1905.04516
Autor:
Scalora, M., Vincenti, M. A., de Ceglia, D., Akozbek, N., Bloemer, M. J., De Angelis, C., Haus, J. W., Vilaseca, R., Trull, J., Cojocaru, C.
Publikováno v:
Phys. Rev. A 98, 023837 (2018)
We explore the outcomes of detailed microscopic models by calculating second- and third-harmonic generation from thin film surfaces with discontinuous free-electron densities. These circumstances can occur in structures consisting of a simple metal m
Externí odkaz:
http://arxiv.org/abs/1806.05014
Autor:
Scalora, M., Vincenti, M. A., de Ceglia, D., Akozbek, N., Bloemer, M. J., Roso, L., Trull, J., Cojocaru, C., Haus, J. W.
In the context of electromagnetism and nonlinear optical interactions damping is generally introduced as a phenomenological, viscous term that dissipates energy, proportional to the temporal derivative of the polarization. Here, we follow the radiati
Externí odkaz:
http://arxiv.org/abs/1804.05369
Autor:
Grande, M., Vincenti, M. A., Stomeo, T., Bianco, G. V., de Ceglia, D., Akozbek, N., Petruzzelli, V., Bruno, G., De Vittorio, M., Scalora, M., Orazio, A. D
We numerically and experimentally investigate graphene-based optical absorbers that exploit guided mode resonances (GMRs) achieving perfect absorption over a bandwidth of few nanometers (over the visible and near-infrared ranges) with a 40-fold incre
Externí odkaz:
http://arxiv.org/abs/1504.05695
Autor:
Grande, M., Vincenti, M. A., Stomeo, T., Bianco, G. V., de Ceglia, D., Akozbek, N., Petruzzelli, V., Bruno, G., De Vittorio, M., Scalora, M., Orazio, A. D
A one-dimensional dielectric grating, based on a simple geometry, is proposed and investigated to enhance light absorption in a monolayer graphene exploiting guided mode resonances. Numerical findings reveal that the optimized configuration is able t
Externí odkaz:
http://arxiv.org/abs/1410.2102
Autor:
Scalora, M., Vincenti, M. A., de Ceglia, D., Akozbek, N., Roppo, V., Bloemer, M. J., Haus, J. W.
We study second and third harmonic generation in centrosymmetric semiconductors at visible and UV wavelengths in bulk and cavity environments. Second harmonic generation is due to a combination of symmetry breaking, the magnetic portion of the Lorent
Externí odkaz:
http://arxiv.org/abs/1109.3431
We present a systematic analysis of the optical properties of slit arrays in metal films. An exhaustive investigation of geometrical and dispersive properties reveals the resonance features of these structures, including the role of surface waves and
Externí odkaz:
http://arxiv.org/abs/1006.3841