In-plane scattering patterns from a complex dielectric grating at the normal and oblique incidence.
J Opt Soc Am A Opt Image Sci Vis
; 31(4): 879-85, 2014 Apr 01.
Article
em En
| MEDLINE
| ID: mdl-24695152
ABSTRACT
The in-plane scattering patterns from a complex dielectric grating were both numerically and experimentally studied in contrast to those from well-known metallic gratings. The incidence was the transverse electric or transverse magnetic wave of wavelength λ=660 nm. The grating profile was complex with a period Λ=7.0 µm, while the material was lightly doped crystalline silicon. Patterns of the electric field, magnetic field, and spatial intensity distribution were demonstrated at the normal (θ(i)=0°) and oblique (θ(i)=+30°) incidence. Electric and magnetic fields were presented in the near field as well as the far field. The measured power ratio within -90°≤θ(r)≤+90° was plotted. Their major peaks and the numerically obtained diffraction efficiency of 21 orders (-10≤m≤+10 or -15≤m≤+5) of diffracted waves occurred at the same θ(r). Other peaks and stair-like shoulders of major peaks also exhibited in spectra.
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1
Coleções:
01-internacional
Base de dados:
MEDLINE
Tipo de estudo:
Incidence_studies
/
Risk_factors_studies
Idioma:
En
Ano de publicação:
2014
Tipo de documento:
Article