Zobrazeno 1 - 10
of 23
pro vyhledávání: '"Lesina, Antonio Cala'"'
We present a density-based topology optimization scheme for locally optimizing the electric power dissipation in nanostructures made of lossy dispersive materials. By using the complex-conjugate pole-residue (CCPR) model, we can accurately model any
Externí odkaz:
http://arxiv.org/abs/2407.05994
Autor:
Habibpourmoghadam, Atefeh, Xie, Wenyong, Bessel, Patrick, Niebur, André, Antanovich, Artsiom, Dorfs, Dirk, Lauth, Jannika, Lesina, Antonio Calà
Transient absorption in plasmonic materials has recently attracted attention of the chemistry and optics communities as a technique to understand dynamic processes and hot carriers generation on ultrafast timescales. In this context, hybrid Au/CuS na
Externí odkaz:
http://arxiv.org/abs/2406.09712
Dielectric metasurfaces can show multi-resonant response with high Q-factors in the visible range due to multipole coupling. This work suggests that these collective resonances in all-dielectric metasurfaces can be modified if adjacent to an anisotro
Externí odkaz:
http://arxiv.org/abs/2404.17788
In the last decades nanostructures have unlocked myriads of functionalities in nanophotonics by engineering light-matter interaction beyond what is possible with conventional bulk optics. The space of parameters available for design is practically un
Externí odkaz:
http://arxiv.org/abs/2305.00234
Autor:
Allayarov, Izzatjon, Evlyukhin, Andrey B., Roth, Diane J., Chichkov, Boris, Zayats, Anatoly V., Lesina, Antonio Calà
Dynamic control of metamaterials and metasurfaces is crucial for many photonic technologies, such as flat lenses, displays, augmented reality devices, and beam steering, to name a few. The dynamic response is typically achieved by controlling the pha
Externí odkaz:
http://arxiv.org/abs/2304.01820
Anapole states are broadly investigated in nanophotonics for their ability to provide field enhancement and transparency. While low extinction has been achieved in dielectric nanoparticles due to the absence of intrinsic losses, in the case of plasmo
Externí odkaz:
http://arxiv.org/abs/2303.00478
Topology optimization techniques have been applied in integrated optics and nanophotonics for the inverse design of devices with shapes that cannot be conceived by human intuition. At optical frequencies, these techniques have only been utilized to o
Externí odkaz:
http://arxiv.org/abs/2203.01462
Autor:
Baxter, Joshua, Pérez-Casanova, Adriana, Cortes-Herrera, Luis, Lesina, Antonio Calà, De Leon, Israel, Ramunno, Lora
The promise of active nanophotonics technology relies on the confinement and control of light at the nanoscale. Confinement via plasmonics, dielectric resonators, and waveguides can be complemented with materials whose optical properties can be contr
Externí odkaz:
http://arxiv.org/abs/2110.14806
Optical phased arrays are of strong interest for beam steering in telecom and LIDAR applications. A phased array ideally requires that the field produced by each element in the array (a pixel) is fully controllable in phase and amplitude (ideally con
Externí odkaz:
http://arxiv.org/abs/2007.12265
Autor:
Bin-Alam, M. Saad, Baxter, Joshua, Awan, Kashif M., Kiviniemi, Antti, Mamchur, Yaryna, Lesina, Antonio Cala', Tsakmakidis, Kosmas L., Huttunen, Mikko J., Ramunno, Lora, Dolgaleva, Ksenia
Plasmonic metasurfaces are promising as enablers of nanoscale nonlinear optics and flat nonlinear optical components. Nonlinear optical responses of such metasurfaces are determined by the nonlinear optical properties of individual nanostructured pla
Externí odkaz:
http://arxiv.org/abs/2007.05142