Low energy structure of above-threshold ionization spectra produced by mid-infrared laser pulses

Laser-induced substructures in above-threshold-ionization spectra from intense few-cycle laser pulses

M. Wickenhauser, X. M. Tong, and C. D. Lin J. R. Macdonald Laboratory, Physics Department, Kansas State University, Manhattan, Kansas 66506-2604, USA Institute for Theoretical Physics, Vienna University of Technology, A-1040 Vienna, Austria Institute of Materials Science, Graduate School of Pure and Applied Science, University of Tsukuba, 1-1-1 Tennodai, Tsukuba, Ibaraki 305-8573, Japan and Cen...

Coulomb focusing at above-threshold ionization in elliptically polarized mid-infrared strong laser fields

The role of Coulomb focusing in above-threshold ionization in an elliptically polarized mid-infrared strong laser field is investigated within a semiclassical model incorporating tunneling and Coulomb field effects. It is shown that Coulomb focusing up to moderate ellipticity values (ξ ∼ 0.3) is dominated by multiple forward scattering of the ionized electron by the atomic core that creates a c...

Intensity-resolved above-threshold ionization of xenon with short laser pulses

We present intensity-resolved above-threshold ionization (ATI) spectra of xenon using an intensity scanning and deconvolution technique. Experimental data were obtained with laser pulses of 58 fs and a central wavelength of 800 nm from a chirped-pulse amplifier. Applying a deconvolution algorithm, we obtained spectra that have higher contrast and are in excellent agreement with characteristic t...

Analytic formulas for above-threshold ionization or detachment plateau spectra

Two-source double-slit interference in angle-resolved high-energy above-threshold ionization spectra of diatoms.

When an electron from a diatomic molecule undergoes tunneling-rescattering ionization, a novel form of destructive interference can be realized that involves all four geometric orbits that are available to the electron when it is freed, because both ionization and rescattering may take place at the same or at different centers. We find experimentally and confirm theoretically that in orientatio...