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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Annular Groove Phase Mask coronagraph in diamond for mid-IR wavelengths
Christian Delacroix,Dimitri Mawet,Jean Surdej,Jacques Baudrand,Mikael Karlsson,Cedric Lenaerts,Serge Habraken +6 more
TL;DR: In this article, the first mid-infrared AGPM prototypes imprinted on a diamond substrate are presented, and an extrapolation of the expected coronagraph performances in the N-band (~10 μm) and prospects for down-scaling the technology to the most wanted L-band (3.5 μm).
Proceedings ArticleDOI
Infrared achromatic phase shifters using modulated total internal reflection
Dimitri Mawet,Cedric Lenaerts,Pierre Riaud,Denis Vandormael,Jerôme Loicq,David Verstraeten,Karl Fleury,Serge Habraken,Jean Surdej +8 more
TL;DR: In this paper, the authors proposed a new family of achromatic phase shifters that uses the modulated total internal reflection (TIR) phenomenon, which can be seen as enhanced Fresnel rhombs for infrared applications like nulling interferometry and polarimetry.
Dissertation
Développement de matériaux déposés par PECVD pour les interconnexions optiques dans les circuits intégrés par une approche "back-end"
TL;DR: In this paper, the authors describe the evolution and evolution of the state-of-the-art in the field of optique integrability and caracterisation dedies.
Journal ArticleDOI
Diffraction from metal strip gratings with high spatial frequency in the infrared spectral region
TL;DR: In this paper, a comparative theoretical and experimental study of the diffraction characteristics of high-spatial-frequency aluminum strip gratings as a function of grating thickness is presented. And the measured transmittances are compared with results calculated by using the rigorous coupled-wave theory and are found to be in good agreement.
Journal ArticleDOI
Hybrid finite-element-analytical method for the analysis of diffraction from metallic gratings of arbitrary profile
TL;DR: In this paper, a hybrid iterative technique for the analysis of plane-wave diffraction from metallic gratings of arbitrary profile is presented, where the finite-element method is used to model the field in the interior (groove) region, and the Floquet space harmonics expansion is used in the exterior region.
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.