Two-photon ionization using elliptically polarized light - art. no. 043404

A powerful and accurate pseudostate method has been used to study two-photo n ionization using elliptically polarized light. Calculations are made for ionization from the ground state as well as from the metastable 2s state of atomic hydrogen. The range of the wavelength chosen is such that it corres ponds to two-photon ionization, i.e.. 900-1700 Angstrom for ionization from the g-round state and 4500-7250 Angstrom for ionization from the 2s state. It is found that at a given wavelength the ellipticity of the incident rad iation modifies the ionization cross section substantially.