Open AccessAnomalous phenomena of electromagnetic wave propagation in metamaterials for arbitrary orientation of optical axis
Author(s) -
Jianhua Zhou,
Hailu Luo,
Shuangchun Wen,
Anle Fang,
Binxian Zhuang
Publication year - 2009
Publication title -
wuli xuebao
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.199
H-Index - 47
ISSN - 1000-3290
DOI - 10.7498/aps.58.1765
Subject(s) - optics , metamaterial , transmittance , permittivity , physics , refraction , negative refraction , optical axis , omnidirectional antenna , reflection (computer programming) , spatial filter , anisotropy , total internal reflection , electromagnetic radiation , specular reflection , refractive index , antenna (radio) , optoelectronics , dielectric , telecommunications , programming language , computer science , lens (geology)
When there is an angle between the anisotropic metamaterials' optical axis and the electromagneticwave propagation axis, anomalous omnidirectional total reflection and anomalous negative refraction are discovered at the interface. The functional relation between incident angle and refractive angle of energy flow is obtained. According to this relation, we can restructure the refractive angle as negative or positive readily by selecting suitable permittivity and permeability tensors. And under these conditions, an anomalous transmittance emergessuch that when incident angle is less than a value, especially in the vicinity of vertical incident, the transmittance is minimum or even zero. According to these characteristics, a new slab spatial filter is put forward. Compared with the traditional space filter system, this new spatial filter's volume is smaller. And these characteristics can also be used to build a reflector of low spatial frequency.