Light-induced vibrational structure in H[sub 2][sup +] and D[sub 2][sup +] in intense laser fields

Journal Article · Mon Feb 22 04:00:00 EST 1993 · Physical Review Letters; (United States)

DOI:https://doi.org/10.1103/PhysRevLett.70.1077· OSTI ID:7057860

Zavriyev, A; Bucksbaum, P H ^[1]; Squier, J; Saline, F ^[2]

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1. Department of Physics, University of Michigan, Ann Arbor, Michigan 48109 (United States)
2. Center for Ultrafast Optical Science, University of Michigan, Ann Arbor, Michigan 48109 (United States)

Molecular bond-softening and above-threshold dissociation of H[sub 2][sup +] and D[sub 2][sup +] in intense laser fields is reexamined using 160 fs pulses of 769 nm light. At intensities greater than [similar to]10[sup 13] W/cm[sup 2] new features appear in the dissociation spectrum. These are consistent with the formation of trapped population in light-induced vibrational states, formed in the adiabatic potential near the three-photon resonance between the 1[ital s][sigma][sub [ital g]] and 2[ital p][sigma][sub [ital u]] states. Rovibrational structure of such light-induced states appears in the kinetic energy spectra of the ion fragments detected after multiphoton ionization.

• OSTI ID: 7057860
• Journal Information: Physical Review Letters; (United States), Journal Name: Physical Review Letters; (United States) Vol. 70:8; ISSN 0031-9007; ISSN PRLTAO
• Country of Publication: United States
• Language: English

Related Subjects

664200* -- Spectra of Atoms & Molecules & their Interactions with Photons-- (1992-)
74 ATOMIC AND MOLECULAR PHYSICS
ADIABATIC APPROXIMATION
CATIONS
CHARGED PARTICLES
DEUTERIUM IONS
ELECTROMAGNETIC RADIATION
ENERGY
ENERGY LEVELS
EXCITED STATES
FRAGMENTATION
HYDROGEN IONS
IONS
KINETIC ENERGY
LASER RADIATION
MOLECULAR IONS
MULTI-PHOTON PROCESSES
PULSES
RADIATIONS
ROTATIONAL STATES
THRESHOLD ENERGY
VIBRATIONAL STATES