A Quantum Control Spectroscopy Approach by Direct UV Femtosecond Pulse Shaping

A Quantum Control Spectroscopy Approach by Direct UV Femtosecond Pulse Shaping

A quantum control spectroscopy (QCS) approach using directly shaped UV excitation pulse is demonstrated. Ultrafast tailored pulses in the region of 310-335 nm are combined with transient absorption to investigate reactive pathways in the excited state of (2,2'-bipyridyl)-3,3'-diol BP(OH) 2...

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Veröffentlicht in:IEEE journal of selected topics in quantum electronics 2012-01, Vol.18 (1), p.449-459
Hauptverfasser: Möhring, J., Buckup, T., Motzkus, M.
Format: Artikel
Sprache:eng
Schlagworte:
Absorption
Correlation
Modulation
Probes
Proton transfer
Spectroscopy
Transient analysis
Ultrafast optics
ultraviolet sources
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Zusammenfassung:A quantum control spectroscopy (QCS) approach using directly shaped UV excitation pulse is demonstrated. Ultrafast tailored pulses in the region of 310-335 nm are combined with transient absorption to investigate reactive pathways in the excited state of (2,2'-bipyridyl)-3,3'-diol BP(OH) 2 . In particular, we apply QCS in the disentanglement of the competing excited-state intramolecular proton-transfer (ESIPT) channels of BP(OH) 2 . Our results challenge parallel reactive pathways in the excited state and suggest a newer model based on an extremely fast sequential double ESIPT process.
ISSN:1077-260X
1558-4542
DOI:10.1109/JSTQE.2011.2138684