Nonlinear optical processes in xenon and krypton studied by two-color multiphoton ionization

Journal Article · Thu Sep 15 00:00:00 EDT 1988 · Phys. Rev. A; (United States)

DOI:https://doi.org/10.1103/PhysRevA.38.2863· OSTI ID:6918638

Blazewicz, P R; Miller, J C

Multiphoton ionization (MPI) and third-harmonic generation (THG) in xenon and krypton have been studied via three-photon resonance with the xenon 6s'(1/2)/sub 1//sup 0/ and krypton 5s((3/2)/sub 1//sup 0/ states. A second, tunable dye laser is used to couple these states to higher-lying even-parity states. Observations are reported regarding the third-harmonic related cancellation of the intermediate s-state population and the mechanisms of population of the final states. Effects of the four-photon resonance on THG are detailed. Changes induced by the second laser reduce THG in normally favorable regions and enable it in otherwise forbidden regions. Striking effects in the MPI spectra due to the changes induced in THG are reported.

• Research Organization: Chemical Physics Section, Health and Safety Research Division, Oak Ridge National Laboratory, Post Office Box 2008, Oak Ridge, Tennessee 37831-6125
• OSTI ID: 6918638
• Journal Information: Phys. Rev. A; (United States), Journal Name: Phys. Rev. A; (United States) Vol. 38:6; ISSN PLRAA
• Country of Publication: United States
• Language: English

Related Subjects

640304* -- Atomic
Molecular & Chemical Physics-- Collision Phenomena
74 ATOMIC AND MOLECULAR PHYSICS
ELEMENTS
EXCIMER LASERS
FLUIDS
FREQUENCY MIXING
GAS LASERS
GASES
HARMONIC GENERATION
IONIZATION
KRYPTON
LASERS
MULTI-PHOTON PROCESSES
NONLINEAR OPTICS
NONMETALS
OPTICS
PHOTOIONIZATION
PRESSURE DEPENDENCE
RARE GASES
XENON