Controlling vibrational wave packets with intense, few-cycle laser pulses

Hiromichi Niikura, D. M. Villeneuve, P. B. Corkum

Research output: Contribution to journalArticle

69 Citations (Scopus)

Abstract

Using three precisely timed laser pulses, we show experimentally that subvibrational period, nonresonant laser radiation can control a vibrational wave packet. One pulse launches the wave packet and the second modifies the potential energy surfaces as the wave packet moves and the third probes its time evolution by Coulomb explosion imaging. First, we observe D2+ wave packets up to the first half revival without a control pulse. Next, we apply the control pulse to split the wave packet when the wave packet is near the outer turning point. We observe that one piece remains in the bound state and the other propagates to the dissociation continuum. By varying the delay between the pump and control pulses, we control the branching ratios. By a quantum mechanical calculation, we also show that if carrier-envelope phases of subvibrational period pulses are controlled, it can break left-right symmetry during dissociation, freezing the electron on one of the two dissociating fragments during dissociation.

Original languageEnglish
JournalPhysical Review A - Atomic, Molecular, and Optical Physics
Volume73
Issue number2
DOIs
Publication statusPublished - 2006
Externally publishedYes

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wave packets
cycles
pulses
lasers
dissociation
freezing
explosions
envelopes
potential energy
fragments
laser beams
pumps
continuums
probes
symmetry
electrons

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics
  • Physics and Astronomy(all)

Cite this

Controlling vibrational wave packets with intense, few-cycle laser pulses. / Niikura, Hiromichi; Villeneuve, D. M.; Corkum, P. B.

In: Physical Review A - Atomic, Molecular, and Optical Physics, Vol. 73, No. 2, 2006.

Research output: Contribution to journalArticle

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