Hamburg 2009 – wissenschaftliches Programm
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MO: Fachverband Molekülphysik
MO 5: Quantenkontrolle 1
MO 5.2: Vortrag
Montag, 2. März 2009, 14:15–14:30, VMP 6 HS-G
New insights on the coherent control of selective bond breaking in model peptides — •Claus Peter Schulz1, Ihar Shchatsinin1, Tim Laarmann1,2, Nickolai Zhavoronkov1, and Ingolf V. Hertel1 — 1Max-Born-Institut, Max-Born-Str. 2A, 12489 Berlin — 2Present address: HASYLAB at DESY, Notkestrasse 85, 22603 Hamburg
One of the goals in coherent control experiments on biologically relevant molecules is to establish an analytic tool. Recently, we have shown that selective bond breaking in model peptides, like Ac-Phe-NHMe, with shaped femtosecond laser pulses is achievable [1]. In this contribution we want to report on new insights into the photo induced bond breaking mechanism. A detailed analysis of the spectral content of the optimal pulse sequence indicates that the S1 state acts as an isomer selective “doorway” in the highly non-linear excitation and fragmentation process.
[1] T. Laarmann, I. Shchatsinin, P. Singh, N. Zhavoronkov, C.P. Schulz, I.V. Hertel, J. Phys. B 41, 074005 (2008).