نتایج جستجو برای: ordinary and extraordinary refractive indices
تعداد نتایج: 16843437 فیلتر نتایج به سال:
Calculating properties of non-collinear phase matching in two different polarization for KDP crystal
Abstract The properties of non-collinear phase-matching (PM) for potassium dihydrogen phosphate (KDP) crystal were calculated. calculated numerically type I phase matching and II-phase matching. group delay dispersion (GDD) was determined KDP at different slant angles types 0°, 40°, 60°, 900°. pumping, signal, idler wavelengths 354.7nm, 1064nm, 532nm respectively. time deepened on the angle thr...
MgxZn1−xO thin films were deposited on glass substrate with x varied between 0.01 and 0.05 by spray pyrolysis at a temperature of 450 °C. The structural investigation showed that all had ZnO wurtzite structure preferred (002) orientation. gap energy was calculated using Tauc’s plot, it decreased over the Mg content 0.07 eV. charge carriers’ density dropped an order 105 as increased whereas resi...
An algorithm is presented for simulation of guided modes in a multilayer uniaxial structure with each layer characterized by its own ellipsoid of refractive indices and direction of optical axis. The proposed approach is based on presenting an electromagnetic field in each layer as a linear combination of ordinary and extraordinary waves coupled through the boundary conditions. The problem is r...
Analytical expressions of the elements of a cross spectral density matrix are derived to describe the partially coherent Lorentz-Gauss beam propagating in uniaxial crystals orthogonal to the x-axis. The intensity and degree of polarization for the partially coherent Lorentz-Gauss beam propagating in uniaxial crystals orthogonal to the x-axis are also presented. The evolution properties of the p...
A prism coupling method was used to measure the ordinary (no) and extraordinary (ne) refractive indices of AlxGa12xN films, grown by hydride vapor phase epitaxy ~HVPE! and metalorganic chemical vapor deposition ~MOCVD! on sapphire, at several discrete wavelengths from 442 nm to 1064 nm. In addition, spectroscopic transmittance and reflectance, correlated with the prism coupling results, were us...
Refractive index measurements of uniaxial media at wavelengths in the I-Rspectrum are described. The experimental technique makes use of the birefringence to generate interference between the extraordinary and ordinary waves created after an incident plane polarized wave enters the crystal. The use of harmonic generation to convert I-Rradiations to
Given an arbitrarily cut uniaxial crystal wedge, a procedure is described using reflection perpendicular-incidence ellipsometry (PIE) for (1) locating the optic axis, and (2) determining the ordinary (N(o)) and extraordinary (N(e)) complex refractive indices. The optic axis is located by finding the principal directions of the two wedge faces and subsequently solving three spherical triangles. ...
Hyperbolic metamaterials comprised of an array of plasmonic nanorods provide a unique platform for designing optical sensors and integrating nonlinear and active nanophotonic functionalities. In this work, the waveguiding properties and mode structure of planar anisotropic metamaterial waveguides are characterized experimentally and theoretically. While ordinary modes are the typical guided mod...
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