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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Journal ArticleDOI
Photoablation: Schottky barriers on patterned Si surfaces
H. Grebel,K. J. Fang +1 more
TL;DR: In this paper, the patterning of the Si surfaces was achieved by photoablation process using an UV excimer laser in a presence of various solutions, using a 5 mW red HeNe laser launched at various angles on the Si surface.
Journal ArticleDOI
Corrugation gratings for fast integrated complementary metal-oxide semiconductor photodetectors: implementation and diffraction analyses
TL;DR: Simulation experiments show reduction in 1/e photon-penetration depth to one half the value that is expected with no grating, which would improve response times for shallow p-n junction photodiodes for use in the optical interconnection of very-large-scale-integrated circuits.
Journal ArticleDOI
Influence of relative refractive index on the efficiency of total internal reflection diffraction gratings. Part I. s-Polarization
S. Sainov,B. Chernov,N. Dushkina +2 more
TL;DR: In this article, the influence of the relative refractive index on the efficiency of chromium diffraction gratings, working in total internal reflection with s-polarized light, is investigated.
Proceedings ArticleDOI
Numerical analysis of tight focusing and scattering of Singular Beams
TL;DR: In this paper, the authors discuss three principle parts of numerical analysis of single beam systems: focusing, scattering and far-field propagation, and present a tight focusing of wavefronts with piecewise quasi constant phase.
Proceedings ArticleDOI
Use of rigorous vector coupled-wave theory for designing and tolerancing surface-relief diffractive components for magneto-optical heads
TL;DR: In this paper, a rigorous coupled wave model is presented, experimentally validated, and used for tolerancing surface relief diffractive elements applications of the model in the design and tolerancing of components for magneto optical (M-O) data storage heads are investigated.
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.
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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.