Experimental Investigations of the Laser Induced Multiphoton and Tunneling Processes in Atoms and Solids

Hartmut Wallis

Bo-nian Dai, P. Lambropoulos

We present a unified theory of laser-induced autoionizinglike behavior in single-photon and multiphoton processes. We incorporate processes assumed unimportant in previous theories and on the basis of realistic calculations we interpret existing experimental results.

J. C. White, Richard R. Freeman

І. І. Бондар, В. В. Суран

Multiphoton transitions in the Ba atom are experimentally studied in the presence of strong nonresonant radiation that additionally polarizes atoms in the ground state. It is found that the additionally induced polarization of Ba atoms leads to an increase in the probability of multiphoton transitions from this state.

Mikhail Vladimirovich Fedorov

Minglin Jin

The nonresonant multiphoton ionization process of lead atoms are investigated at the laser wavelengths of 1064 nm, 532 nm, 355 nm. The dependence of the 7-photon ionization probability of lead atoms on the statistical properties of laser pulse has been analysed by varying the spectral bandwidth of the laser pulse.