Short wavelength band structure of photons in cholesteric liquid crystals

被引:1
作者
Bogdanov, O. V. [1 ,2 ]
Kazinski, P. O. [1 ]
Korolev, P. S. [1 ]
Lazarenko, G. Yu. [1 ]
机构
[1] Tomsk State Univ, Phys Fac, Tomsk 634050, Russia
[2] Tomsk Polytech Univ, Tomsk 634050, Russia
关键词
Cholesteric liquid crystals; The shortwave approximation; The bound states; Resonance; The dispersion laws; OPTICAL-PROPERTIES; LIGHT; REFLECTION; PROPAGATION; DIFFRACTION; SCATTERING; SPECTRA; WELL;
D O I
10.1016/j.molliq.2022.121095
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
The band structure of photons in cholesteric liquid crystals (CLCs) is investigated in the shortwave approximation. Bound states or narrow resonances of photons in a CLC are formed by the extraordinary waves. The explicit expressions for the spectrum bands and the dispersion laws of photons in these bands are obtained. It is shown that these states describe photons propagating almost perpendicular to the CLC axis. The density of photon states acquires a sharp peak due to the presence of bound states. Near this peak, in the particular case of plasma permittivity, the photons posses a linear or quadratic dispersion relations in the directions perpendicular to the CLC axis depending on the sign of the anisotropy of the CLC permittivity tensor. The resonances in the CLC plate are also described.(c) 2022 Elsevier B.V. All rights reserved.
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页数:14
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