Sub-Cycle Strong-Field Interferometry

Details Sub-Cycle Strong-Field Interferometry Sub-Cycle Strong-Field Interferometry

2010-07-14

arxiv.org/abs/1007.2258v1

Physics

Chemical Physics

first submitted on April 19, 2010

Scientific paper

A nonlinear interferometry scheme is described theoretically to induce and resolve electron wave- function beating on time scales shorter than the optical cycle of the time-delayed pump and probe pulses. By employing two moderately intense few-cycle laser fields with a stable carrier-envelope phase, a large range of the entire electronic level structure of a quantum system can be retrieved. In contrast to single-photon excitation schemes, the retrieved electronic states include levels that are both dipole- and non-dipole-accessible from the ground electronic state. The results show that strong-field interferometry can reveal both high-resolution and broad-band spectral information at the same time with important consequences for quantum-beat spectroscopy on attosecond or even shorter time scales.

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