Journal ArticleDOI
Diffraction analysis of dielectric surface-relief gratings
M. G. Moharam,Thomas K. Gaylord +1 more
TLDR
In this article, a dielectric surface-relief grating is analyzed using rigorous coupled-wave theory and the analysis applies to arbitrary grating profiles, groove depths, angles of incidence, and wavelengths.Abstract:
Diffraction by a dielectric surface-relief grating is analyzed using rigorous coupled-wave theory. The analysis applies to arbitrary grating profiles, groove depths, angles of incidence, and wavelengths. Example results for a wide range of groove depths are presented for sinusoidal, square-wave, triangular, and sawtooth gratings. Diffraction efficiencies obtained from the present method of analysis are compared with previously published numerical results. To obtain large diffraction efficiencies (greater than 85%) for gratings with typical substrate permittivities, it is shown that the grating profile should possess even symmetry.read more
Citations
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Patent
Holographic data storage media with structure surfaces
TL;DR: In this paper, a grating pattern of subwavelength structures providing low reflectivity at the operating characteristics of holographic optical systems to use the media is proposed. And the structure may be same or similar to one-, two-, or three-dimensional sinusoidal, triangular, staircase, moth eye, pyramidal, lamellar or binary structures.
Journal ArticleDOI
Diffraction analysis of blazed transmission gratings with a modified extended scalar theory.
TL;DR: An alternative interpretation of the diffraction of blazed transmission gratings with moderate structure period is proposed according to a modified extended scalar theory, and it is observed that MEST gives the total field that agrees with rigorous coupled-wave analysis (RCWA), and the result is more reliable than that of extended Scalar theory (EST).
Journal ArticleDOI
Dynamical theory of diffraction at in-depth multilayered gratings
TL;DR: In this paper, the diffraction of an electromagnetic plane wave at an in-depth multilayered grating is considered in the framework of dynamical theory, and numerical results are given in the X-ray regime for lamellar gratings obtained by engraving multilayer Bragg mirrors.
Journal ArticleDOI
Analysis of Doubly Periodic Inhomogeneous Dielectric Structures by a Hybrid Projective Method
TL;DR: In this paper, a hybrid projective method involving the method of coupled waves, method of projective matching of fields on the boundaries of partial regions, and one-dimensional finite elements method is proposed.
Proceedings ArticleDOI
A diamond AGPM coronagraph for VISIR
Christian Delacroix,Olivier Absil,Dimitri Mawet,Charles Hanot,Mikael Karlsson,Pontus Forsberg,Eric Pantin,Jean Surdej,Serge Habraken +8 more
TL;DR: In this paper, a phase mask coronagraph was fabricated on a diamond substrate for the upcoming upgrade of VISIR, the mid-IR imager and spectrograph on the ESO (Paranal), in collaboration with members of the VISIR consortium.
References
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Journal ArticleDOI
Rigorous coupled-wave analysis of planar-grating diffraction
M. G. Moharam,Thomas K. Gaylord +1 more
TL;DR: In this article, a rigorous coupled-wave approach is used to analyze diffraction by general planar gratings bounded by two different media, and the analysis is based on a state-variables representation and results in a unifying, easily computer-implementable matrix formulation.
Journal ArticleDOI
Theory of Periodic Dielect Waveguides
TL;DR: In this paper, the propagation of electromagnetic waves along open periodic, dielectric waveguides is formulated as a rigorous and exact boundary-value problem, and the characteristic field solutions are shown to be of the surface-wave or leaky-wave type, depending on the ratio of periodicity to wavelength (d/lambda).
Journal ArticleDOI
Analysis and Design of Grating Couplers
Theodor Tamir,S. T. Peng +1 more
TL;DR: In this paper, simple design criteria for grating couplers which transfer the energy of a beam into or out of an optical waveguide are developed based on an accurate perturbation analysis of the guiding properties of dielectric gratings.
Journal ArticleDOI
Rigorous diffraction theory for transmission phase gratings with deep rectangular grooves
TL;DR: In this article, the diffraction of light by deep rectangular-groove transmission phase gratings is treated by solving Maxwell's equations numerically, and results are given for the light diffracted into the zero order by gratings with grating constants d in the range λ < d < 5λ, aspect ratio b (= linewidth/d), 0 < b < 1, and grating depths a < 5 λ, assuming a refractive index n 0 = 1.
Journal ArticleDOI
Analysis of grating-coupled radiation in GaAs:GaAlAs lasers and waveguides - I
TL;DR: In this paper, a general formulation for arbitrary-shaped gratings which need not be small in size was developed for radiated power from traveling waves as a function of grating tooth height, tooth width, refractive index, waveguide thickness, and period.