New polarization effects in atomic gases

Eugene P. Bashkin

Steven A. Moses, Jacob P. Covey, Matthew Miecnikowski +2 more

S. Stringari, John L. Bohn, Eugene Demler +5 more

Recently ground state polar molecules have been successfully realized using stimulated Raman adiabatic passage (STIRAP) technique, which has stimulated new experimental activities along this direction in many laboratories. It is very promising that a stable and quantum degenerate gas of polar molecules can be realized in the near future. Such polar molecules have a large permanent electric dipole moment and hence strong long-range dipolar interaction effects in the presence of an electric field, giving rise to new few- and many-body phenomena that are absent in the traditional atomic systems explored so far.

Valery Alexandrovich Astapenko, L. A. Bureeva, Valerii S. Lisitsa

G. A. Delone, B. A. Zon, K. B. Petrosian

Denis V. Brazhnikov, А. В. Тайченачев, Anatolii M Tumaikin +1 more

Nonlinear Doppler-free spectroscopy of atom gases in counterpropagating light waves is investigated. We consider a general case of elliptic polarizations and the energy level degeneracy. New results are obtained in comparison with cases of linear and circular wave polarizations. It is shown that nonlinear resonance versus the light wave detuning has asymmetry and shift for elliptic polarizations.