CHOLESTERIC LIQUID CRYSTALS WITH TUNABLE DEFECT INSIDE

被引：3

作者：

Gevorgyan, A. H. ^{[1
]}

Oganesyan, K. B. ^{[2
]}

Harutyunyan, E. M. ^{[3
]}

Harutyunyan, S. H. ^{[3
]}

Santrosyan, E. A. ^{[1
]}

机构：

[1] Yerevan State Univ, Dept Phys, Yerevan 025, Armenia

[2] Yerevan Phys Inst, Yerevan 036, Armenia

[3] Armenian Acad Sci, Inst Appl Problems Phys, Yerevan 014, Armenia

来源：

MODERN PHYSICS LETTERS B | 2011年 / 25卷 / 18期

关键词：

Cholesteric liquid crystals; nematic liquid crystals; defect modes; diffraction; photonic band gap; tunable reflection; CHIRAL PHOTONIC CRYSTALS; MODES; LIGHT; TRANSMISSION; REFLECTION; THRESHOLD; EMISSION; LASER; LAYER; EDGE;

D O I：

10.1142/S0217984911026905

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Peculiarities of the defect modes of cholesteric liquid crystals (CLCs) with an isotropic/anisotropic defect inside are investigated. The influence of the defect layer thickness and its anisotropy of refraction, the influence of the system thickness and of the defect layer position in the system, as well as the influence of the dielectric borders on the defect modes are investigated. It is shown that it is possible to change reflection at the defect modes in wide intervals and change the defect mode wavelength, by tuning the defect location and its thickness. Such a system possesses transmission asymmetry. Also, the CLC system thickness and the refraction coefficient of the medium bordering the CLC layer on its both sides have essential influence on the reflection at the defect mode and on the reflection frequency.

引用

页码：1511 / 1520

页数：10

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