Abstract

We have analyzed peculiarities in the localization of light in a layer of a cholesteric liquid crystal (CLC) for the normal incidence of light. It is shown that dielectric boundaries strongly affect the localization. For the minimal influence of dielectric boundaries (i.e., for n_s = \(\sqrt {{{\varepsilon }_{m}}} \)), the total field for the eigenmodes in the CLC layer varies smoothly upon a displacement along the z axis directed along the axis of the medium (here, ε_m is the mean permittivity of the CLC layer and n_s is the refractive index of the external medium). When n_s differs from \(\sqrt {{{\varepsilon }_{m}}} \) or when the polarization of incident light differing from the polarization of the eigenmodes, oscillations appear in the dependence of the energy of the total wave field in the CLC layer on z. It is shown that the amount of the energy stored in the CLC layer depends on n_s, and the total accumulated energy in the CLC layer increases monotonically with n_s.

中文翻译：

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胆甾型液晶中光局部化的特殊性

摘要

我们已经分析了胆甾型液晶（CLC）层中光的正常入射光的局限性。结果表明，介电边界对定位的影响很大。为电介质的边界的影响最小（即，用于Ñ_小号= \（\ SQRT {{{\ varepsilon} _ {M}}} \） ），对于在CLC层中的本征模的总场平滑地变化时沿位移所述ž轴沿介质的轴线定向（在此，ε_米是CLC层的平均介电常数和ñ _š在外部介质的折射率）。当n _s与\（\ sqrt {{{\ varepsilon} _ {m}}} \ \或者，当入射光的偏振不同于本征模的偏振时，z上CLC层中总波场能量的依赖性就会出现振荡 。结果表明，存储在CLC层中的能量大小取决于n _s，并且CLC层中的总累积能量随n _s单调增加。