title: Field-cycle-resolved photoionization in solids.
abstract: The Keldysh theory of photoionization in a solid dielectric is generalized to the case of arbitrarily short driving pulses of arbitrary pulse shape. We derive a closed-form solution for the nonadiabatic ionization rate in a transparent solid with a periodic dispersion relation, which reveals ultrafast ionization dynamics within the field cycle and recovers the key results of the Keldysh theory in the appropriate limiting regimes.
authors.affiliation: Department of Physics and Astronomy, Texas A&M University, College Station, Texas 77843, USA and Russian Quantum Center, 143025 Skolkovo, Moscow Region, Russia.
authors.forename: P A
authors.initials: PA
authors.lastname: Zhokhov
authors.affiliation: Department of Physics and Astronomy, Texas A&M University, College Station, Texas 77843, USA and Russian Quantum Center, 143025 Skolkovo, Moscow Region, Russia and Physics Department, International Laser Center, M.V. Lomonosov Moscow State University, 119992 Moscow, Russia.
authors.forename: A M
authors.initials: AM
authors.lastname: Zheltikov