Grating Diffraction Effects in the THz Domain

The Diffraction Grating

Distributed Reflector Structure and Diffraction Grating Structure in the Solar Cell

Today, due to qualitative growth and scientific advances, energy, especially electricity is increasingly needed by human society. One of the almost endless and pure energy which have been paid attention over the years is the solar energy. Solar cells directly convert solar energy into electrical energy and are one of the main blocks of photovoltaic systems. Significant improvement has been made...

Effective grating theory for resonance domain surface-relief diffraction gratings.

An effective grating model, which generalizes effective-medium theory to the case of resonance domain surface-relief gratings, is presented. In addition to the zero order, it takes into account the first diffraction order, which obeys the Bragg condition. Modeling the surface-relief grating as an effective grating with two diffraction orders provides closed-form analytical relationships between...

Fresnel diffraction effects in Fourier-transform arrayed waveguide grating spectrometer.

We present an analysis of Fourier-transform arrayed waveguide gratings in the Fresnel diffraction regime. We report a distinct spatial modulation of the interference pattern referred to as the Moiré-Talbot effect. The effect and its influence in a FT AWG device is explained by deriving an original analytical expression for the modulated field, and is also confirmed by numerical simulations usin...

The dielectric lamellar diffraction grating

A rigorous modal theory describing the diffraction properties of a dielectric lamellar grating is presented . The numerical implementation is shown to be suited to modelling the behaviour of high refractive index gratings . This suggests that an approach of this type may be successfully applied to the problem of lossy metallic lamellar gratings . 1 . Introduction The problem of diffraction by a...