6533b855fe1ef96bd12b0743
RESEARCH PRODUCT
Observation of field phase dependent autoionization
Dimitris CharalambidisDimitris CharalambidisN E KarapanagiotiD. XenakisEdouard HertzOlivier Fauchersubject
PhysicsPhotonField (physics)Phase (waves)Condensed Matter PhysicsInteraction volumeAtomic and Molecular Physics and OpticsAutoionizationExcited statePhysics::Atomic and Molecular ClustersPhysics::Atomic PhysicsAtomic physicsGround stateExcitationdescription
We report on the observation of a field phase dependent autoionization rate of calcium in the region of the doubly excited state. Excitation of the autoionizing state occurs from the atomic ground state through two phase related and hence interfering channels, namely a three photon channel and a single photon channel , being the third harmonic of . The autoionization rate exhibits a sinusoidal modulation as a function of the relative phase of the two excitation fields. Both ionizing fields are not focused in the interaction region, thus demonstrating the possibility of phase control in a large interaction volume and free of phase shift effects associated with focused geometries.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 1999-01-01 | Journal of Physics B: Atomic, Molecular and Optical Physics |