Stark effect in an amplitude-modulated field

Amitabh Joshi, Ravinder Rupchand Puri, S. V. Lawande

The analytic solution of the Bloch equations in the secular approximation for a two level atom driven off-resonance by an intense amplitude modulated field is presented. The dependence of the atomic population inversion on the longitudinal and transverse lifetimes is investigated.

V. M. Vaǐnberg, V. D. Mur, В. С. Попов +1 more

Min Li, Qi Wei

The Electric Stark effect of a Kramers-Henneberger (KH) state of hydrogen atoms in both linearly and circularly polarized laser fields is studied. For the ground KH state of H atoms with a small quiver amplitude, the quadratic Stark effect is observed. For a large quiver amplitude, the Stark effect is quadratic only in a weak electric field and quickly changes to linear as the electric field increases. The atomic structure of the KH state is very sensitive to the electric field and can be easily polarized. The huge polarizability and induced dipole moment are comparable to those of Rydberg atoms.

V. M. Semibalomut, R. I. Sokolovskiǐ

Rodrigo López-Martens, Timothy W. Schmidt, Gareth O. Roberts

S. Feneuille, Marie-Gabrielle Schweighofer, Guy Oliver

By studying the response of a two-level system to a narrow-band light excitation completely modulated in amplitude, a new manifestation of the dynamical Stark effect is predicted. It can be observed not only through the modulation rate or the phaseshift of the scattered light but also through the mean total intensity. Thus its experimental observation should be particularly easy.