Green´s function of electromagnetic field in cholesteric liquid crystals with large-scale periodicity

Author

Aksenova, Elena V. ; Romanov, Vadim P. ; Val´kov, Alexei Yu

Author_Institution

Dept. of Phys., St. Petersburg State Univ., Russia

fYear

1999

fDate

1999

Firstpage

7

Lastpage

15

Abstract

The Green´s function of an electromagnetic field in cholesteric liquid crystals with the pitch being large compared to the wavelength is considered. The Green´s function is constructed using the solutions of uniform Maxwell equations. The case of the far zone is analysed in detail. The periodic system is distinguished from an anisotropic medium by a discontinuity of the wave vector surface and a break of beam vector surface. The forbidden zone corresponds to capture of beams with small angles of incidence forming a wave channel. Within this wave channel the Green´s function asymptotics differs from 1/r behaviour

Keywords

Green´s function methods; Maxwell equations; cholesteric liquid crystals; electromagnetic wave propagation; inhomogeneous media; Green´s function; Green´s function asymptotics; anisotropic medium; beam vector surface break; cholesteric liquid crystals; electromagnetic field; far zone; forbidden zone; large-scale periodicity; optical properties; periodic system; pitch; small angles of incidence; uniform Maxwell equations; wave channel; wave vector surface discontinuity; Anisotropic magnetoresistance; Electromagnetic fields; Electromagnetic propagation; Electromagnetic scattering; Geometrical optics; Green´s function methods; Large-scale systems; Liquid crystals; Optical diffraction; Optical scattering;

fLanguage

English

Publisher

ieee

Conference_Titel

Day on Diffraction, 1999. Proceedings. International Seminar

Conference_Location

St. Petersburg

Print_ISBN

5-7997-0156-9

Type

conf

DOI

10.1109/DD.1999.816177

Filename

816177