Quantum Orbits: a Powerful Concept in Laser-Atom Physics

摘要

Additional support for the concept of "quantum orbits" is presented that emphasizes in particular the importance of "long orbits" where the time between ionization and rescattering may be many periods of the laser field. Two examples are discussed, above-threshold ionization by an elliptically polarized laser field and intensity-dependent enhancements of certain spectral regions within the backscattering plateau, where we compare experimental data and the theoretical quantum-orbit simulations. In both cases, good agreement is obtained.