Zobrazeno 1 - 10
of 38
pro vyhledávání: '"Ichiji, Naoki"'
Autor:
Ichiji, Naoki, Ishida, Takuya, Morichika, Ikki, Oue, Daigo, Tatsuma, Tetsu, Ashihara, Satoshi
Rotational motion of charges in plasmonic nanostructures plays an important role in transferring angular momentum between light and matter on the nanometer scale. Although sophisticated control of rotational charge motion has been achieved using spat
Externí odkaz:
http://arxiv.org/abs/2407.19632
Publikováno v:
Physical Review B 2024, 109, 035428
An optical field around regular polygon metal nanostructures excited by circularly polarized light can exhibit rotationally displaced intensity distributions. Although this phenomenon has been recognized, its underlying mechanisms has not been suffic
Externí odkaz:
http://arxiv.org/abs/2311.15133
It is now well-understood that a Lorentz boost of a spatially coherent monochromatic optical beam yields a so-called space-time wave packet (STWP): a propagation-invariant pulsed beam whose group velocity is determined by the relative velocity betwee
Externí odkaz:
http://arxiv.org/abs/2308.06387
Autor:
Ichiji, Naoki, Oue, Daigo, Yessenov, Murat, Schepler, Kenneth L., Abouraddy, Ayman F., Kubo, Atsushi
In addition to longitudinal spin angular momentum (SAM) along the axis of propagation of light, spatially structured electromagnetic fields such as evanescent waves and focused beams have recently been found to possess transverse SAM in the direction
Externí odkaz:
http://arxiv.org/abs/2301.12654
Space-time (ST) wave packets are propagation-invariant pulsed optical beams that travel freely in dielectrics at a tunable group velocity without diffraction or dispersion. Because ST wave packets maintain these characteristics even when only one tra
Externí odkaz:
http://arxiv.org/abs/2212.05450
Autor:
Ichiji, Naoki, Kikuchi, Hibiki, Yessenov, Murat, Schepler, Kenneth L., Abouraddy, Ayman F., Kubo, Atsushi
Because surface plasmon polaritons (SPPs) are surface waves characterized by one free transverse dimension, the only monochromatic diffraction-free spatial profiles for SPPs are cosine and Airy waves. Pulsed SPP wave packets have been recently formul
Externí odkaz:
http://arxiv.org/abs/2202.10504
Autor:
Ichiji, Naoki, Kubo, Atsushi
Publikováno v:
Optics Letters; Vol. 47,; Issue 2,; pp. 265-268; (2022)
In this study, we investigate plasmon-induced transparency (PIT) in a resonator structure consisting of two orthogonally-arranged metal-insulator-metal (MIM) nanocavities with the aim of spectral modulation of a specific resonant order of the resonat
Externí odkaz:
http://arxiv.org/abs/2110.12619
Modulation of the optical index by means of atomic and material resonances provides a basis for controlling light propagation in natural and artificially fabricated materials. In addition, recent advances in the tuning of spatiotemporal couplings of
Externí odkaz:
http://arxiv.org/abs/2103.07568
Publikováno v:
Optics Express; Vol. 27,; Issue 16,; pp. 22582-22601; (2019)
To study the dynamical optical interactions of nano-scaled metal-insulator-metal (MIM) structures in temporal-frequency domain, femtosecond surface plasmon polariton (SPP) wave packets propagate over a surface with a MIM structure. The resonance natu
Externí odkaz:
http://arxiv.org/abs/1904.11750
Publikováno v:
Nanophotonics, Vol 11, Iss 7, Pp 1321-1333 (2022)
The spatiotemporal dynamics of a surface plasmon polariton (SPP) wave packet (WP) that interacts with a plasmonic nanocavity on a metal surface are investigated via femtosecond time-resolved two-photon fluorescence microscopy and numerical calculatio
Externí odkaz:
https://doaj.org/article/b73e0e79d4904741802240ec461627ba
