搜索结果: 1-14 共查到“harmonics”相关记录14条 . 查询时间(0.125 秒)
The Impact of Multichannel and Multipole Effects on the Cooper Minimum in the High-Harmonics Spectrum of Argon
Impact of Multichannel Multipole Effects Cooper Minimum the High-Harmonics Spectrum Argon
2012/2/28
We investigate the relevance of multiple-orbital and multipole effects during high-harmonic generation (HHG). The time-dependent configuration-interaction singles (TDCIS) approach is used to study the...
Bound states in the radiation continuum and a resonant generation of second harmonics in double arrays of subwavelength dielectric cylinders
Bound states radiation continuum subwavelength dielectric cylinder second harmonics
2011/8/24
Abstract: A nonlinear electromagnetic scattering problem is studied for two parallel periodic arrays of dielectric cylinders with a second order nonlinear susceptibility. For a wide range of values of...
Third and fifth harmonics generation by tightly focused femtosecond pulses at 2.2 μm wavelength in air
harmonics focused femtosecond pulses
2011/9/6
We report experiments on the generation of third and fifth harmonics of millijoule-level, tightly focused, femtosecond laser pulses at 2.2 μm wavelength in air. The measured ratio of yields of the thi...
Harmonics generation and intense terahertz radiation from polar molecules at multiphoton resonant excitation in laser fields
laser fields polar molecules Harmonics generation and intense terahertz radiation
2011/9/1
The coherent radiation spectrum of two-level polar molecules with UV transition is studied at the multiphoton resonant excitation by a moderately strong laser field. The spectrum corresponding to harm...
Carrier heating and high-order harmonics generation in doped graphene by a strong ac electric field
Carrier heating high-order harmonics generation strong ac electric field
2010/11/25
The nonlinear response of electrons (holes) in doped graphene on ac pumping is concidered the-
oretically for the frequency region above the energy relaxation rate but below the momentum and
carrier...
Nonsymmetrized Hyperspherical Harmonics approach to A=6 system
Nonsymmetrized Hyperspherical Harmonics
2011/1/7
The Hyperspherical Harmonics basis, without a previous symmetrization step, is used to calculate binding energies of the nuclear A = 6 systems using a version of the Volkov potential acting only on s-...
On Generalized Monopole Spherical Harmonics and the Wave Equation of a Charged Massive Kerr Black Hole
Generalized Monopole Spherical Harmonics Wave Equation of a Charged Massive Kerr Black Hole
2010/11/30
We find linearly independent solutions of the Goncharov-Firsova equation in the case of a massive complex scalar field on a Kerr black hole. The solutions generalize, in some sense, the classical mono...
Internal-wave reflection from uniform slopes:higher harmonics and Coriolis effects
Internal-wave reflection uniform slopes higher harmonics Coriolis effects
2009/11/9
Weakly nonlinear reflection of internal waves from uniform slopes produces higher harmonics and mean fields; the expressions are here derived for constant stratification and with Coriolis effects full...
Equatorial insolation: from precession harmonics to eccentricity frequencies
equatorial insolation precession harmonics eccentricity frequency
2008/11/11
Since the paper by Hays et al. (1976), spectral analyses of climate proxy records provide substantial evidence that a fraction of the climatic variance is driven by insolation changes in the frequency...
Equatorial insolation：from precession harmonics to eccentricity frequencies
Equatorial insolation precession harmonics eccentricity frequencies
2008/11/11
Since the paper by Hays et al. (1976), spectral analyses of climate proxy records provide substantial evidence that a fraction of the climatic variance is driven by insolation changes in the frequency...
ACTIVE POWER COMPENSATOR OF THE CURRENT HARMONICS BASED ON THE INSTANTANEOUS POWER THEORY
Active Power Filter instantaneous power theory harmonics compensation
2010/1/12
The quality of the electrical current becomes a major concern. The proliferation of the power electronic converters, which are used extensively to control electrical apparatus in industrial and commer...
Eigen-Harmonics Faces: Face Recognition under Generic Lighting
Eigen-Harmonics Faces Face Recognition Generic Lighting
2010/12/15
The performances of face recognition systems are heavily subject to the variations in lighting. We propose a novel approach for face recognition under generic illumination conditions, named as Eigenha...
Comparative Study of First Two Harmonics in Cosmic Ray Intensity for the Period 1964-95
Cosmic rays Diurnal Semi-diurnal Anisotropy and Solar poloidal magnetic field
2010/4/12
The Deep River neutron monitor data has been harmonically analyzed for the period 1964--95 covering three solar cycles 20, 21 and 22, looking for a long term trend of the diurnal and semi-diurnal anis...
ON THE HARMONICS REDUCTION USING WAVELET BASED SIGNAL PROCESSING
harmonic reduction wavelet analysis active filter
2010/1/13
This paper presents a method for calculating the reference currents needed for
the command of an active filter. By using the Discrete Wavelet Transform (DWT) the
high-frequency components of the cur...