Exceptional points and lines and Dirac points and lines in magnetoactive cholesteric liquid crystals

AH Gevorgyan - Journal of Molecular Liquids, 2023 - Elsevier
We investigated the properties of cholesteric liquid crystals (CLCs) being in external static
magnetic field directed along the helix axis. We have shown that in the case of the …

Magnetically induced tunable exceptional and Dirac points

AH Gevorgyan - Journal of Molecular Liquids, 2024 - Elsevier
The photonic properties of cholesteric liquid crystals (CLCs) in an external magnetic field
parallel to the helix axis are theoretically investigated for the first time in the short …

Magnetically induced transparency in helically structured periodic crystals

AH Gevorgyan - Physical Review E, 2022 - APS
We investigated the specific properties of magnetically induced transparency (MIT) and
magnetically induced absorption (MIA) in helically structured periodic crystals (HSPCs). We …

Unusually strong, tunable, and nonreciprocal light trapping and absorption in helically structured magnetoactive media

AH Gevorgyan - Journal of Applied Physics, 2022 - pubs.aip.org
We investigated the absorption properties of photonic structures with both large optical
activity and magneto-optical activity parameters. The photonic structure is a periodic helical …

Dirac points, new photonic band gaps, and effect of magnetically induced transparency in dichroic cholesteric liquid crystals with wavelength-dependent magneto …

AH Gevorgyan - Physical Review E, 2023 - APS
We investigated the properties of cholesteric liquid crystals (CLCs) being in an external
static magnetic field directed along the helix axis. We considered a dichroic CLC, that is …

Nonreciprocal localization of light in magnetoactive cholesteric liquid crystals in an external magnetic field

AH Gevorgyan, SS Golik, YN Kulchin, NA Vanyushkin - Optik, 2021 - Elsevier
The optical properties of cholesteric liquid crystals (CLCs) exhibiting magneto-optical activity
in the presence of an external static magnetic field have been investigated. The boundary …

[HTML][HTML] Dirac points in chiral liquid crystals

AH Gevorgyan - Physics Letters A, 2022 - Elsevier
We report about observation of Dirac points in chiral liquid crystals (CLC), both in the
presence of external magnetic field and in its absence. The analytical formulas for …

Features of magnetically induced exceptional points in cholesteric liquid crystals

AH Gevorgyan, AV Bulanov… - Laser Physics …, 2024 - iopscience.iop.org
In this work, the photonic properties of cholesteric liquid crystals (CLCs) in an external
magnetic field parallel to the helix axis are investigated for the first time in the short …

Some features of magneto-optics of cholesteric liquid crystals

AH Gevorgyan, SS Golik, NA Vanyushkin… - Journal of Modern …, 2021 - Taylor & Francis
We investigated the features of the optical properties of magnetoactive cholesteric liquid
crystals (CLCs) in an external static magnetic field. The boundary-value problem of light …

Linear and circular dichroisms of cholesteric liquid crystals in a longitudinal external magnetic field

AH Gevorgyan, NA Vanyushkin, IM Efimov… - Liquid …, 2023 - Taylor & Francis
We investigated the properties of linear and circular dichroisms of cholesteric liquid crystal
layer in external static magnetic field directed along helix axis. We showed that when the …