Quantum control of photodissociation using intense, femtosecond pulses shaped with third order dispersion

We demonstrate the ability to control the molecular dissociation rate using femtosecond pulses shaped with third-order dispersion (TOD). Explicitly, a significant 50% enhancement in the dissociation yield for the low lying vibrational levels (v ∼ 6) of an ion-beam target was measured as a function o...

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Published inJournal of physics. B, Atomic, molecular, and optical physics Vol. 48; no. 20; pp. 201001 - 201006
Main Authors Lev, U, Graham, L, Madsen, C B, Ben-Itzhak, I, Bruner, B D, Esry, B D, Frostig, H, Heber, O, Natan, A, Prabhudesai, V S, Schwalm, D, Silberberg, Y, Strasser, D, Williams, I D, Zajfman, D
Format Journal Article
LanguageEnglish
Published IOP Publishing 28.10.2015
Subjects
Alignment
Dispersion
Femtosecond pulses
intense field
Ion beams
Leading edges
Level (quantity)
Photodissociation
quantum control
Stability
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Summary:We demonstrate the ability to control the molecular dissociation rate using femtosecond pulses shaped with third-order dispersion (TOD). Explicitly, a significant 50% enhancement in the dissociation yield for the low lying vibrational levels (v ∼ 6) of an ion-beam target was measured as a function of TOD. The underlying mechanism responsible for this enhanced dissociation was theoretically identified as non-adiabatic alignment induced by the pre-pulses situated on the leading edge of pulses shaped with negative TOD. This control scheme is expected to work in other molecules as it does not rely on specific characteristics of our test-case molecule.
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ISSN:0953-4075
1361-6455
DOI:10.1088/0953-4075/48/20/201001