نتایج جستجو برای: harmonic index
تعداد نتایج: 442206 فیلتر نتایج به سال:
We carry out wavelength-dependent second harmonic interference experiments using thin films of an organic dye as nonlinear optical sources. While the measured difference of refractive index between the fundamental and second harmonic wavelengths follows the theoretical expectation for air in a wide spectral region, anomalous dispersion is observed when the second harmonic light lies in the abso...
We study pulsed second harmonic generation in metamaterials under conditions of significant absorption. Tuning the pump in the negative index range, a second harmonic signal is generated in the positive index region, such that the respective indices of refraction have the same magnitudes but opposite signs. This insures that a forward-propagating pump is exactly phase matched to the backward-pr...
Twenty-five cultivars of grain sorghum [Sorghum bicolor (L.) Moench] were examined under both drought stress and normal conditions in 4 experiments. In each condition, genotypes were evaluated in a factorial experiment using a randomized complete block design with 3 replications. Eight drought tolerance indices including stability tolerance index, mean productivity (MP), geometric MP, harmonic ...
For every closed Riemannian spin manifold its Dirac operator is a selfadjoint linear elliptic operator acting on sections of the spinor bundle. Hitchin [3] proved that the dimension of its kernel, the space of harmonic spinors, only depends on the conformal class of the Riemannian metric, and that it varies with the conformal class. However, the variation is not understood. Investigating this v...
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