Zobrazeno 1 - 10
of 255
pro vyhledávání: '"Papasimakis N"'
Autor:
Zdagkas, A., Shen, Y., McDonnell, C., Deng, J., Li, G., Ellenbogen, T., Papasimakis, N., Zheludev, N. I.
The transverse electromagnetic waves are major information and energy carriers. In 1996, Hellwarth and Nouchi theoretically identified a radically different, non-transverse type of electromagnetic pulses of toroidal topology. These pulses, which are
Externí odkaz:
http://arxiv.org/abs/2102.03636
Recently it was reported that deeply subwavelength features of free space superoscillatory electromagnetic fields can be observed experimentally and used in optical metrology with nanoscale resolution [Science 364, 771 (2019)]. Here we introduce a ne
Externí odkaz:
http://arxiv.org/abs/1908.00946
Publikováno v:
Phys. Rev. B 97, 201409 (2018)
Transverse electromagnetic plane waves are fundamental solutions of Maxwell's equations. It is less known that a radically different type of solutions has been described theoretically, but has never been realized experimentally, that exist only in th
Externí odkaz:
http://arxiv.org/abs/1707.06088
Publikováno v:
Phys. Rev. B 95, 220201 (2017)
We demonstrate natural optical activity in disordered ensembles of non-chiral plasmonic resonators. We show that the statistical distributions of rotatory power and spatial dichroism are strongly dependent on the scattering mean free path in diffusiv
Externí odkaz:
http://arxiv.org/abs/1610.08432
We study the propagation properties and light-matter interactions of the focused doughnut pulses, broadband, single-cycle electromagnetic perturbations of toroidal topology first described by Hellwarth and Nouchi in 1996. We show how focused doughnut
Externí odkaz:
http://arxiv.org/abs/1512.04285
Autor:
Raybould, T. A., Fedotov, V. A., Papasimakis, N., Kuprov, I., Youngs, I., Chen, W. T., Tsai, D. P., Zheludev, N. I.
Publikováno v:
Phys. Rev. B 94, 035119 (2016)
Optical activity is ubiquitous across natural and artificial media and is conventionally understood in terms of scattering from electric and magnetic moments. Here we demonstrate experimentally and confirm numerically a type of optical activity that
Externí odkaz:
http://arxiv.org/abs/1508.06192
Autor:
Fedotov, V. A., Papasimakis, N., Plum, E., Bitzer, A., Walther, M., Kuo, P., Tsai, D. P., Zheludev, N. I.
Publikováno v:
Phys. Rev. Lett. 104, 223901 (2010)
We report on a new collective phenomenon in metamaterials: spectral line collapse with increasing number of the unit cell resonators (meta-molecules). Resembling the behaviour of exotic states of matter, such as Bose-Einstein condensates of excitons
Externí odkaz:
http://arxiv.org/abs/0908.2533
Publikováno v:
Phys. Rev. Lett. 103, 093901 (2009)
In this letter, we present the first experimental study of a new chiral metamaterial consisting of toroidal wire windings. We show that the metamaterial exhibits three bands of circular dichroism in the GHz range. We discuss the response of the struc
Externí odkaz:
http://arxiv.org/abs/0810.3539
Publikováno v:
Nature Photonics 2, 351 - 354 (2008)
In 2003 Bergman and Stockman introduced the spaser, a quantum amplifier of surface plasmons by stimulated emission of radiation [1]. They argued that, by exploiting a metal/dielectric composite medium, it should be possible to construct a nano-device
Externí odkaz:
http://arxiv.org/abs/0802.2519
Publikováno v:
Phys. Rev. Lett. 101, 253903 (2008)
We present a new type of electromagnetic planar metamaterial that exhibit strong dispersion at a local minimum of losses and is believed to be the first metamaterial analog of electromagnetically induced transparency. We demonstrate that pulses propa
Externí odkaz:
http://arxiv.org/abs/0801.1485