Abstract Submitted for the MAR06 Meeting of The American Physical Society Relaxation dynamics of dissolved molecule probed by a phase locked pulse pair:Br2 in Ar1

Submitted for the MAR06 Meeting of The American Physical Society Relaxation dynamics of dissolved molecule probed by a phase locked pulse pair:Br2 in Ar1 MIZUHO FUSHITANI, HEIDE IBRAHIM, MARKUS GUEHR, NIKOLAUS SCHWENTNER, Freie Universitaet Berlin — A phase locked pulse pair(PLPP) is a strong tool to investigate the electronic coherence of molecules. Recently, we have shown that the PLPP experiment is also applicable to dissolved molecules[1]. Here, we apply this method to the Br2/Ar system and investigate relaxation dynamics in the electronically excited B state of Br2. We observed not only laser induced fluorescence(LIF) from the B state but also LIF from the A and A’ states which are energetically lower than the B state. Tuning the relative phase between PLPPs provides the various LIF ratio among those states, indicating relaxation channels which can be coherently controlled. The PLPP results will be compared with those obtained by frequency resolved excitations which give the LIF ratio resulting from all possible relaxation. [1] M. Fushitani, et al. PCCP 7 (2005) 3143. 1This work is financially supported by the Deutsche Forschungsgemeinschaft via the Sfb 450. Mizuho Fushitani Freie Universitaet Berlin Date submitted: 15 Jan 2006 Electronic form version 1.4