Publication detail

Engineering of Active and Passive Loss in High-Quality-Factor Vanadium Dioxide-Based BIC Metasurfaces

AIGNER, A. LIGMAJER, F. ROVENSKÁ, K. HOLOBRÁDEK, J. IDESOVÁ, B. MAIER, S. TITTL, A. MENEZES, L.

Original Title

Engineering of Active and Passive Loss in High-Quality-Factor Vanadium Dioxide-Based BIC Metasurfaces

Type

journal article in Web of Science

Language

English

Original Abstract

Active functionalities of metasurfaces are of growing interest in nanophotonics. The main strategy employed to date is spectral resonance tuning affecting predominantly the far-field response. However, this barely influences other essential resonance properties like near-field enhancement, signal modulation, quality factor, and absorbance, which are all vital for numerous applications. Here we introduce an active metasurface approach that combines temperature-tunable losses in vanadium dioxide with far-field coupling tunable symmetry-protected bound states in the continuum. This method enables exceptional precision in independently controlling both radiative and nonradiative losses. Consequently, it allows for the adjustment of both the far-field response and, notably, the near-field characteristics like local field enhancement and absorbance. We experimentally demonstrate continuous tuning from under- through critical- to overcoupling, achieving quality factors of 200 and a relative switching contrast of 78%. Our research marks a significant step toward highly tunable metasurfaces, controlling both near- and far-field properties.

Keywords

Active metasurfaces; bound states in thecontinuum; vanadium dioxide; loss tunability; near-fieldtunability

Authors

AIGNER, A.; LIGMAJER, F.; ROVENSKÁ, K.; HOLOBRÁDEK, J.; IDESOVÁ, B.; MAIER, S.; TITTL, A.; MENEZES, L.

Released

27. 8. 2024

Publisher

AMER CHEMICAL SOC

Location

WASHINGTON

ISBN

1530-6984

Periodical

NANO LETTERS

Year of study

24

Number

35

State

United States of America

Pages from

10742

Pages to

10749

Pages count

8

URL

https://pubs.acs.org/doi/10.1021/acs.nanolett.4c01703

Full text in the Digital Library

http://hdl.handle.net/11012/249515

BibTex

@article{BUT189716,
  author="Andreas {Aigner} and Filip {Ligmajer} and Katarína {Rovenská} and Jakub {Holobrádek} and Beáta {Idesová} and Stefan A. {Maier} and Andreas {Tittl} and Leonardo de S. {Menezes}",
  title="Engineering of Active and Passive Loss in High-Quality-Factor Vanadium Dioxide-Based BIC Metasurfaces",
  journal="NANO LETTERS",
  year="2024",
  volume="24",
  number="35",
  pages="10742--10749",
  doi="10.1021/acs.nanolett.4c01703",
  issn="1530-6984",
  url="https://pubs.acs.org/doi/10.1021/acs.nanolett.4c01703"
}