دانلود مقاله ISI انگلیسی شماره 144475
ترجمه فارسی عنوان مقاله

بازتاب دو طرفه نامتقارن و انتقال نور توسط یک ساختار مشبک حاوی مقره توپولوژیک

عنوان انگلیسی
Bilaterally asymmetric reflection and transmission of light by a grating structure containing a topological insulator
کد مقاله سال انتشار تعداد صفحات مقاله انگلیسی
144475 2017 10 صفحه PDF
منبع

Publisher : Elsevier - Science Direct (الزویر - ساینس دایرکت)

Journal : Optics Communications, Volume 398, 1 September 2017, Pages 67-76

پیش نمایش مقاله
پیش نمایش مقاله  بازتاب دو طرفه نامتقارن و انتقال نور توسط یک ساختار مشبک حاوی مقره توپولوژیک

چکیده انگلیسی

A boundary-value problem was formulated to investigate the reflection and transmission of light by a device consisting of an orthorhombic dielectric material that sits atop a 1D grating and is coated with a 3D topological insulator. In view of the periodicity of the grating, the electromagnetic field phasors were represented in terms of Floquet harmonics and the analysis was conducted by using the rigorous coupled-wave approach. We found that the device can exhibit bilaterally asymmetric reflection and transmission in the mid-infrared wavelength regime, provided that the surface admittance of the topological insulator is sufficiently high. This bilateral asymmetry is exhibited in narrow regimes for both the free-space wavelength and the angle of incidence. Bilateral asymmetry is exhibited more significantly by the specular components than by the nonspecular components of the reflected and transmitted plane waves.