Publication detail

Two-dimensional quantitative near-field phase imaging using square and hexagonal interference devices

DVOŘÁK, P. KLOK, P. KVAPIL, M. HRTOŇ, M. BOUCHAL, P. KRPENSKÝ, J. KŘÁPEK, V. ŠIKOLA, T.

English title

Two-dimensional quantitative near-field phase imaging using square and hexagonal interference devices

Type

journal article in Web of Science

Language

en

Original abstract

We demonstrate the formation of the near field with non-trivial phase distribution using surface plasmon interference devices, and experimental quantitative imaging of that phase with near-field phase microscopy. The phase distribution formed with a single device can be controlled by the polarization of the external illumination and the area of the device assigned to the object wave. A comparison of the experimental data to a numerical electromagnetic model and an analytical model assigns the origin of the near-field phase to the out-of-plane electric component of surface plasmon polaritons, and also verifies the predictive power of the models. We demonstrate a formation of near-field plane waves with different propagation directions on a single device, or even simultaneously at distinct areas of a single device. Our findings open the way to the imaging and tomography of phase objects in the near field.

English abstract

We demonstrate the formation of the near field with non-trivial phase distribution using surface plasmon interference devices, and experimental quantitative imaging of that phase with near-field phase microscopy. The phase distribution formed with a single device can be controlled by the polarization of the external illumination and the area of the device assigned to the object wave. A comparison of the experimental data to a numerical electromagnetic model and an analytical model assigns the origin of the near-field phase to the out-of-plane electric component of surface plasmon polaritons, and also verifies the predictive power of the models. We demonstrate a formation of near-field plane waves with different propagation directions on a single device, or even simultaneously at distinct areas of a single device. Our findings open the way to the imaging and tomography of phase objects in the near field.

Keywords in English

interference nanostructures; near-field; phase imaging; SNOM; SPP waves

Released

26.08.2022

Publisher

De Gruyter

Location

BERLIN

ISSN

2192-8614

Volume

11

Number

19

Pages from–to

1–12

Pages count

12

BIBTEX


@article{BUT178969,
  author="Petr {Dvořák} and Pavel {Klok} and Michal {Kvapil} and Martin {Hrtoň} and Petr {Bouchal} and Jan {Krpenský} and Vlastimil {Křápek} and Tomáš {Šikola},
  title="Two-dimensional quantitative near-field phase imaging using square and hexagonal interference devices",
  year="2022",
  volume="11",
  number="19",
  month="August",
  pages="1--12",
  publisher="De Gruyter",
  address="BERLIN",
  issn="2192-8614"
}