Nonadiabatic laser-induced orientation and alignment of rotational-state-selected CH3Br molecules

S.Z. Luo, R.H. Zhu, L.H. He, W.H. Hu, X.K. Li, P. Ma, C.C. Wang, F.C. Liu, W.G. Roeterdink, S. Stolte, D.J. Ding

Research output: Contribution to JournalArticleAcademicpeer-review

Abstract

Nonadiabatic orientation and alignment of hexapole rotational-state-selected methyl bromine (CH3Br) molecules is studied. The temporal evolution of the mixed dc field and laser-induced orientation and alignment is measured by a pump-probe method. The temporal orientation and alignment transients are in good agreement with the time-dependent Schrödinger equation calculation we perform. We show that the degree of orientation and alignment is strongly dependent on the selected initial rotational state. The temporal transients originating from two different initial states, the |111) state and the mixed |111)+|212) state, are discussed. Our results show a maximum degree of (cosθ)=-0.7 for the orientation of CH3Br molecules in the |111) state.
Original languageEnglish
Pages (from-to)053408
JournalPhysical Review A. Atomic, Molecular and Optical Physics
Volume91
Issue number5
DOIs
Publication statusPublished - 2015
Externally publishedYes

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