Differential study on molecular suppressed ionization in intense linearly and circularly polarized laser fields
Journal Article
·
· Physical Review. A
- Department of Physics and State Key Laboratory for Mesoscopic Physics, Peking University, Beijing 100871 (China)
We present a differential study on above-threshold ionization of the O{sub 2} (N{sub 2}) molecule as well as the companion atom Xe (Ar) (with close ionization potential) produced by linearly and circularly polarized laser fields (25 fs, 795 nm). The photoelectron angular distributions of the companion target are similar at the same laser condition. In both linearly and circularly polarized fields, we observe that the photoelectron yields of O{sub 2} are suppressed in the entire energy spectral range as compared with Xe with fully differential measurements, but not for the N{sub 2}-Ar pair. This is different from the prediction of photoelectron energy spectra by the model including the interference terms [Phys. Rev. Lett. 85, 2280 (2000)], from which the low-energy photoelectrons of O{sub 2} were expected to be strongly suppressed in both linearly and circularly polarized laser fields. Resorting to the basic strong-field ionization picture, we believe that the lower orbital-dependent multiphoton excitation or tunneling possibility of O{sub 2} as compared with Xe is responsible for this effect. High-resolution fully differential data pose a stringent test on the current strong-field calculations on molecules.
- OSTI ID:
- 22095751
- Journal Information:
- Physical Review. A, Journal Name: Physical Review. A Journal Issue: 6 Vol. 84; ISSN 1050-2947; ISSN PLRAAN
- Country of Publication:
- United States
- Language:
- English
Similar Records
Comparison Study of Atomic and Molecular Single Ionization in the Multiphoton Ionization Regime
Strong-field ionization of laser-irradiated light homonuclear diatomic molecules: A generalized strong-field approximation-linear combination of atomic orbitals model
Ionization of oriented carbonyl sulfide molecules by intense circularly polarized laser pulses
Journal Article
·
Fri Jun 23 00:00:00 EDT 2006
· Physical Review Letters
·
OSTI ID:20777293
Strong-field ionization of laser-irradiated light homonuclear diatomic molecules: A generalized strong-field approximation-linear combination of atomic orbitals model
Journal Article
·
Wed Jun 15 00:00:00 EDT 2005
· Physical Review. A
·
OSTI ID:20717942
Ionization of oriented carbonyl sulfide molecules by intense circularly polarized laser pulses
Journal Article
·
Mon Feb 14 23:00:00 EST 2011
· Physical Review. A
·
OSTI ID:21537172