Electron rescattering in strong-field photodetachment of F${}^{-}$

We present ab initio studies of photoelectron spectra for above threshold detachment (ATD) of F${}^{-}$ anions in short, 1300 nm and 1800 nm laser pulses. We identify and assess the importance of electron rescattering in strong-field photodetachment of a negative ion through comparison with an analytic, Keldysh-type approach, demonstrating the capability of ab-initio computation in the challenging near-IR regime. We further assess the influence of the strong electron correlation on the photodetachment.