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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-...
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...