Abstract
We experimentally demonstrate field-free, spin-selective alignment of ortho- and para molecular spin isomers at room temperature. By means of two nonresonant, strong, properly delayed femtosecond pulses within a four wave mixing arrangement, we observed selective alignment for homonuclear diatomics composed of spin () or spin () atoms. The achieved selective control of the isomers’ angular distribution and rotational excitation may find applications to analysis, enrichment, and actual physical separation of molecular spin modifications.
- Received 8 May 2007
DOI:https://doi.org/10.1103/PhysRevLett.99.093002
©2007 American Physical Society