Ionization of oriented carbonyl sulfide molecules by intense circularly polarized laser pulses

Journal Article · Tue Feb 15 00:00:00 EST 2011 · Physical Review. A

DOI:https://doi.org/10.1103/PHYSREVA.83.023405· OSTI ID:21537172

Dimitrovski, Darko; Abu-samha, Mahmoud; Madsen, Lars Bojer; Filsinger, Frank; Meijer, Gerard; Kuepper, Jochen ^[1]; Holmegaard, Lotte; Kalhoej, Line ^[2]; Nielsen, Jens H ^[3]; Stapelfeldt, Henrik ^[2]

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1. Lundbeck Foundation Theoretical Center for Quantum System Research, Department of Physics and Astronomy, Aarhus University, DK-8000 Aarhus C (Denmark)
2. Department of Chemistry, Aarhus University, DK-8000 Aarhus C (Denmark)
3. Department of Physics, Aarhus University, DK-8000 Aarhus C (Denmark)

We present combined experimental and theoretical results on strong-field ionization of oriented carbonyl sulfide molecules by circularly polarized laser pulses. The obtained molecular frame photoelectron angular distributions show pronounced asymmetries perpendicular to the direction of the molecular electric dipole moment. These findings are explained by a tunneling model invoking the laser-induced Stark shifts associated with the dipoles and polarizabilities of the molecule and its unrelaxed cation. The focus of the present article is to understand the strong-field ionization of one-dimensionally-oriented polar molecules, in particular asymmetries in the emission direction of the photoelectrons. In the following article [Phys. Rev. A 83, 023406 (2011)] the focus is to understand strong-field ionization from three-dimensionally-oriented asymmetric top molecules, in particular the suppression of electron emission in nodal planes of molecular orbitals.

• OSTI ID: 21537172
• Journal Information: Physical Review. A, Vol. 83, Issue 2; Other Information: DOI: 10.1103/PhysRevA.83.023405; (c) 2011 American Institute of Physics; ISSN 1050-2947
• Country of Publication: United States
• Language: English

Related Subjects

74 ATOMIC AND MOLECULAR PHYSICS
ANGULAR DISTRIBUTION
CARBON OXYSULFIDE
DIPOLES
ELECTRIC DIPOLE MOMENTS
ELECTRON EMISSION
IONIZATION
LASER RADIATION
MOLECULES
ONE-DIMENSIONAL CALCULATIONS
POLARIZABILITY
POLARIZED BEAMS
PULSES
THREE-DIMENSIONAL CALCULATIONS
TUNNEL EFFECT
BEAMS
CARBON COMPOUNDS
DIPOLE MOMENTS
DISTRIBUTION
ELECTRIC MOMENTS
ELECTRICAL PROPERTIES
ELECTROMAGNETIC RADIATION
EMISSION
MULTIPOLES
PHYSICAL PROPERTIES
RADIATIONS
SULFUR COMPOUNDS