Laser-induced resonance states as dynamic suppressors of ionization in high-frequency short pulses - art. no. 013402

An adiabatic-Floquet formalism is used to study the suppression of ionizati on in short laser pulses. In the high-frequency limit the adiabatic equatio ns involve only the pulse envelope where transitions are purely ramp effect s. For a short-ranged potential having a single-bound state we show that io nization suppression is caused by the appearance of a laser-induced resonan ce state, which is coupled by the pulse ramp to the ground state and acts t o trap ionizing flux.