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Magnetically Induced Transparency in Media with Helical Dichroic Structure.

Ashot H Gevorgyan¹, Sergey S Golik^1,2, Nikolay A Vanyushkin¹

¹School of Natural Sciences, Far Eastern Federal University, 10 Ajax Bay, Russky Island, 690922 Vladivostok, Russia.

Materials (Basel, Switzerland)

|April 30, 2021

Summary

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This study investigates magneto-optical properties of dichroic cholesteric liquid crystals, revealing a tunable, nonreciprocal transmission band. These findings advance optical device applications using advanced liquid crystal materials.

Area of Science:

Condensed Matter Physics
Optics
Materials Science

Background:

Cholesteric liquid crystals exhibit unique optical properties.
Magneto-optical effects in materials are crucial for device applications.
Controlling light transmission with external fields is a key research area.

Purpose of the Study:

To investigate the magneto-optical properties of dichroic cholesteric liquid crystals.
To analyze the behavior of light reflection, transmission, absorption, and polarization.
To explore the potential for tunable optical transmission bands.

Main Methods:

Solving the dispersion equation for the liquid crystal layer.
Analyzing spectral properties including reflection, transmission, and absorption.

Keywords:

cholesteric liquid crystal eigen polarization magnetically induced transparency magneto-optical activity spectra of absorption spectra of reflection spectra of transmission

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Investigating polarization states (ellipticity and azimuth) of eigen waves.

Main Results:

Detailed analysis of dispersion equation solutions and their unique characteristics.
Characterization of specific spectral properties.
Demonstration of a tunable linear and nonreciprocal transmission band.

Conclusions:

Dichroic cholesteric liquid crystals with specific parameters exhibit tunable magneto-optical properties.
The identified tunable transmission band offers potential for novel optical devices.
Further research can explore practical applications of these findings.