Two-photon excitation of the metastable 2s state of hydrogen assisted by laser-induced chirped Stark shifts and continuum structure

Journal Article · Tue Mar 01 04:00:00 EST 2005 · Physical Review. A

DOI:https://doi.org/10.1103/PhysRevA.71.033418· OSTI ID:20650451

Yatsenko, L P; Romanenko, V I; Shore, B W; Halfmann, T; Bergmann, K ^[1]

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1. Fachbereich Physik der Universitaet, D-67653 Kaiserslautern (Germany)

Traditional two-photon excitation suffers from two difficulties that prevent complete population transfer: dynamic Stark shifts and multiphoton ionization. We describe a technique for overcoming these limitations by using a second field to control dynamic Stark shifts via Stark-chirped rapid adiabatic passage (SCRAP) and simultaneously suppress undesired photoionization via laser-induced continuum structure (LICS). We illustrate this proposed procedure by numerical simulations of two-photon excitation of the metastable 2s state of hydrogen, showing that efficient excitation can be expected when the two laser pulses are properly crafted.

• OSTI ID: 20650451
• Journal Information: Physical Review. A, Journal Name: Physical Review. A Journal Issue: 3 Vol. 71; ISSN 1050-2947; ISSN PLRAAN
• Country of Publication: United States
• Language: English

Related Subjects

74 ATOMIC AND MOLECULAR PHYSICS
ATOMS
COMPUTERIZED SIMULATION
CONTROL
EXCITATION
HYDROGEN
LASER RADIATION
METASTABLE STATES
MULTI-PHOTON PROCESSES
PHOTOIONIZATION
PHOTON-MOLECULE COLLISIONS
PHOTONS
PULSES
RYDBERG STATES
SPECTRAL SHIFT
STARK EFFECT