Zobrazeno 1 - 10
of 3 362
pro vyhledávání: '"Capasso F."'
Autor:
Dainese, P., Marra, L., Cassara, D., Portes, A., Oh, J., Yang, J., Palmieri, A., Rodrigues, J. R., Dorrah, A. H., Capasso, F.
Complex non-local behavior makes designing high efficiency and multifunctional metasurfaces a significant challenge. While using libraries of meta-atoms provide a simple and fast implementation methodology, pillar to pillar interaction often imposes
Externí odkaz:
http://arxiv.org/abs/2405.03930
Autor:
Kumar, M., Nowzari, A., Persson, A. R., Jeppesen, S., Wacker, A., Bastard, G., Wallenberg, R., Capasso, F., Maisi, V. F., Samuelson, L.
Publikováno v:
Nano Lett. 24, 7948 (2024)
We demonstrate experimentally non-equilibrium transport in unipolar quasi-1D hot electron devices reaching ballistic limit. The devices are realized with heterostructure engineering in nanowires to obtain dopant- and dislocation-free 1D-epitaxy and f
Externí odkaz:
http://arxiv.org/abs/2403.06630
Autor:
Ossiander, M., Meretska, M. L., Rourke, S., Spaegele, C. M., Yin, X., Benea-Chelmus, I. C., Capasso, F.
Publikováno v:
Nature Communications volume 14, Article number: 1114 (2023)
We demonstrate stable optical microcavities by counteracting the phase evolution of the cavity modes using an amorphous silicon metasurface as one of the two cavity end mirrors. Careful design allows us to limit the metasurface scattering losses at t
Externí odkaz:
http://arxiv.org/abs/2208.06718
Autor:
Ossiander, M., Huang, Y. W., Chen, W. T., Wang, Z., Yin, X., Ibrahim, Y. A., Schultze, M., Capasso, F.
Publikováno v:
Nat Commun 12, 6518 (2021)
Transparent materials do not absorb light but have profound influence on the phase evolution of transmitted radiation. One consequence is chromatic dispersion, i.e., light of different frequencies travels at different velocities, causing ultrashort l
Externí odkaz:
http://arxiv.org/abs/2105.06805
Autor:
Columbo, L., Piccardo, M., Prati, F., Lugiato, L. A., Brambilla, M., Gatti, A., Silvestri, C., Gioannini, M., Opacak, N., Schwarz, B., Capasso, F.
Publikováno v:
Phys. Rev. Lett. 126, 173903 (2021)
Frequency combs have become a prominent research area in optics. Of particular interest as integrated comb technology are chip-scale sources, such as semiconductor lasers and microresonators, which consist of resonators embedding a nonlinear medium e
Externí odkaz:
http://arxiv.org/abs/2007.07533
Autor:
Villalpando, A. A. Loya, Martin-Albo, J., Chen, W. T., Guenette, R., Lego, C., Park, J. S., Capasso, F.
Metalenses are optical devices that implement nanostructures as phase shifters to focus incident light. Their compactness and simple fabrication make them a potential cost-effective solution for increasing light collection efficiency in particle dete
Externí odkaz:
http://arxiv.org/abs/2007.06678
Autor:
Atikian, H., Sinclair, N., Latawiec, P., Xiong, X., Meesala, S., Gauthier, S., Wintz, D., Randi, J., Bernot, D., DeFrances, S., Thomas, J., Roman, M., Durrant, S., Capasso, F., Loncar, M.
High-power lasers have numerous scientific and industrial applications. Some key areas include laser cutting and welding in manufacturing, directed energy in fusion reactors or defense applications, laser surgery in medicine, and advanced photolithog
Externí odkaz:
http://arxiv.org/abs/1909.06458
In this letter, we experimentally report an achromatic metalens (AML) operating over a continuous bandwidth in the visible. This is accomplished via dispersion engineering of dielectric phase shifters: titanium dioxide nanopillars tiled on a dielectr
Externí odkaz:
http://arxiv.org/abs/1701.06696
Autor:
Prati, F., Lugiato, L.A., Gatti, A., Columbo, L., Silvestri, C., Gioannini, M., Brambilla, M., Piccardo, M., Capasso, F.
Publikováno v:
In Chaos, Solitons and Fractals: the interdisciplinary journal of Nonlinear Science, and Nonequilibrium and Complex Phenomena December 2021 153 Part 1
Autor:
Wang, C. Y., Diehl, L., Gordon, A., Jirauschek, C., Kaertner, F. X., Belyanin, A., Bour, D., Corzine, S., Hoefler, G., Troccoli, M., Faist, J., Capasso, F.
We report the observation of a coherent multimode instability in quantum cascade lasers (QCLs), which is driven by the same fundamental mechanism of Rabi oscillations as the elusive Risken-Nummedal-Graham-Haken (RNGH) instability predicted 40 years a
Externí odkaz:
http://arxiv.org/abs/physics/0612075