High-harmonic generation from a confined atom

Details High-harmonic generation from a confined atom High-harmonic generation from a confined atom

2000-04-19

arxiv.org/abs/physics/0004045v2

Physics

Atomic Physics

4 pages(tex files), 4 figures(eps files); added references and comments

Scientific paper

10.1103/PhysRevA.62.051402

The order of high harmonics emitted by an atom in an intense laser field is limited by the so-called cutoff frequency. Solving the time-dependent Schr\"odinger equation, we show that this frequency can be increased considerably by a parabolic confining potential, if the confinement parameters are suitably chosen. Furthermore, due to confinement, the radiation intensity remains high throughout the extended emission range. All features observed can be explained with classical arguments.

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