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Molecular dissociation by mid-IR femtosecond pulses

MPG-Autoren
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Windhorn,  Lars
Laser Chemistry, Max Planck Institute of Quantum Optics, Max Planck Society;

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Witte,  Thomas
Laser Chemistry, Max Planck Institute of Quantum Optics, Max Planck Society;

Yeston,  Jake S.
Max Planck Society;

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Proch,  Detlev
Laser Chemistry, Max Planck Institute of Quantum Optics, Max Planck Society;

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Motzkus,  Marcus
Laser Chemistry, Max Planck Institute of Quantum Optics, Max Planck Society;

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Kompa,  Karl-Ludwig
Laser Chemistry, Max Planck Institute of Quantum Optics, Max Planck Society;

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Fuß,  Werner
Laser Chemistry, Max Planck Institute of Quantum Optics, Max Planck Society;
Laboratory for Attosecond Physics, Max Planck Institute of Quantum Optics, Max Planck Society;

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Zitation

Windhorn, L., Witte, T., Yeston, J. S., Proch, D., Motzkus, M., Kompa, K.-L., et al. (2002). Molecular dissociation by mid-IR femtosecond pulses. Chemical Physics Letters, 357(1-2), 85-90. Retrieved from http://www.sciencedirect.com/science/article/B6TFN-45H0CW0-3/1/0bdf02ce4e4e425bdeecfba910a95f03.


Zitierlink: https://hdl.handle.net/11858/00-001M-0000-000F-C219-6
Zusammenfassung
By focusing a MIR femtosecond laser in a cell containing gas- phase metal carbonyls, the resonant infrared multiphoton dissociation of molecules was observed, Cr(CO)6, Mo(CO)6,W(CO)6, and Fe(CO)5 could easily be dissociated, which requires an excitation to at least v = 7 or 8 of the CO stretch vibration. After irradiation with ~150 fs pulses at 5 µm the metal carbonyl practically disappears in favor of free CO, as detected by the IR spectrum. By comparing the power dependence of the total conversion with a model, we can infer that only few vibrational degrees of freedom are involved in the excitation process. (C) 2002 Published by Elsevier Science B.V.