Laser-induced alignment and orientation of quantum-state-selected large molecules.

نویسندگان

  • Lotte Holmegaard
  • Jens H Nielsen
  • Iftach Nevo
  • Henrik Stapelfeldt
  • Frank Filsinger
  • Jochen Küpper
  • Gerard Meijer
چکیده

A strong inhomogeneous static electric field is used to spatially disperse a supersonic beam of polar molecules, according to their quantum state. We show that the molecules residing in the lowest-lying rotational states can be selected and used as targets for further experiments. As an illustration, we demonstrate an unprecedented degree of laser-induced one-dimensional alignment (cos;(2)theta_(2D)=0.97) and strong orientation of state-selected iodobenzene molecules. This method should enable experiments on pure samples of polar molecules in their rotational ground state, offering new opportunities in molecular science.

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عنوان ژورنال:
  • Physical review letters

دوره 102 2  شماره 

صفحات  -

تاریخ انتشار 2009