Title :
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
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;
Conference_Titel :
Day on Diffraction, 1999. Proceedings. International Seminar
Conference_Location :
St. Petersburg
Print_ISBN :
5-7997-0156-9
DOI :
10.1109/DD.1999.816177
