Harmonic generation by atoms in circularly polarized laser fields: far-off and near resonances regimes

Details Harmonic generation by atoms in circularly polarized laser fields: far-off and near resonances regimes Harmonic generation by atoms in circularly polarized laser fields: far-off and near resonances regimes

2003-11-07

arxiv.org/abs/physics/0311032v1

Physics

Atomic Physics

Submitted to Appl. Phys. B, 4 pages

Scientific paper

10.1007/s00340-004-1458-x

The generation of harmonics by atoms interacting with two circularly polarized and frequency related laser fields is addressed through ab initio numerical simulations. A detailed charaterization of a few specific harmonics is given. In particular, the two different cases where the total energy absorbed through photons is far-off or close to the energy gap between different atomic states are investigated. It is found that the conversion efficiency in the harmonic generation is strongly dependent on the inner atomic structure and in certain specific cases it can be significantly enhanced within a small frequency range.

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