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- Title
Dynamic inversion of planar-chiral response of terahertz metasurface based on critical transition of checkerboard structures.
- Authors
Urade, Yoshiro; Fukawa, Kai; Miyamaru, Fumiaki; Okimura, Kunio; Nakanishi, Toshihiro; Nakata, Yosuke
- Abstract
Keywords: asymmetric transmission; circular conversion dichroism; metasurface; planar chirality; terahertz photonics; vanadium dioxide EN asymmetric transmission circular conversion dichroism metasurface planar chirality terahertz photonics vanadium dioxide 2057 2064 8 05/12/22 20220401 NES 220401 1 Introduction Artificial materials composed of subwavelength structures, such as metamaterials and metasurfaces, have interesting electromagnetic properties, such as bianisotropy [[1]], negative refractive index [[2]], and hyperbolic dispersion [[4]]. Here, HT <math overflow="scroll" xmlns="http://www.w3.org/1998/Math/MathML"><mi mathvariant="normal"> </mi><mrow><mi>T</mi><mo stretchy="false"> </mo></mrow><mo> </mo><mi mathvariant="normal"> </mi><mi>T</mi><mo>/</mo><msub><mi>T</mi><mtext>sapp</mtext></msub></math> ht . In both cases, it is confirmed that the sign of HT <math overflow="scroll" xmlns="http://www.w3.org/1998/Math/MathML"><mi mathvariant="normal"> </mi><mrow><mi>T</mi><mo stretchy="false"> </mo></mrow></math> ht , namely CCD, is flipped by changing the parameters. Figure 4a and b show the HT <math overflow="scroll" xmlns="http://www.w3.org/1998/Math/MathML"><mi mathvariant="normal"> </mi><mrow><mi>T</mi><mo stretchy="false"> </mo></mrow></math> ht spectra for the numerical simulations and experiments, respectively.
- Subjects
SUBMILLIMETER waves; NEGATIVE refraction; PHASE transitions; TERAHERTZ time-domain spectroscopy; ELECTRICAL conductors; OPTICAL polarization; SAPPHIRES; HOLOGRAPHY
- Publication
Nanophotonics (21928606), 2022, Vol 11, Issue 9, p2057
- ISSN
2192-8606
- Publication type
Article
- DOI
10.1515/nanoph-2021-0671