6533b7d8fe1ef96bd126a53b
RESEARCH PRODUCT
AC Stark shift of the ground state of atomic hydrogen
A. GailitisE. Karulesubject
PhysicsSecond order theoryQuantum opticsPhysics and Astronomy (miscellaneous)Condensed matter physicsHydrogenGeneral EngineeringGeneral Physics and Astronomychemistry.chemical_elementField strengthsymbols.namesakeStark effectchemistrysymbolsIntermediate statePhysics::Atomic PhysicsPerturbation theoryAtomic physicsGround statedescription
An analytical expression for the second-order AC Stark shift of the ground state of atomic hydrogen is derived, which is convergent for negative as well as for positive energies of intermediate states except for the resonances. To clarify the applicability of the second-order perturbation theory, we compared results with those which are obtained by us and other authors using nonperturbative methods. It appears that values obtained for the AC Stark shift using our simple formula agree on average with Floquet-method calculations up to the field strength F=0.12 (a.u.), which corresponds to I=1015 W/cm2.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2004-05-01 | Applied Physics B: Lasers and Optics |