Laser Control of Selective Preparation of Preoriented Enantiomers from Their Racemate

摘要

We present a simple treatment of laser control of selective preparation of pre-oriented enantiomers from an equal mixture of R- and L- forms. The control is carried out by using a linearly polarized laser whose polarization direction is determined in a such away that the laser interacts with L- (R-) enantiomers but not with R-(L-) enantiomers. A four-state model for an enantiomer with one-dimensional, double-well potential is adopted to derive an analytical expression for the time evolution of racemate. The effects of the laser field intensity on the selectivity of enantiomers are discussed. To demonstrate the effectiveness of the simplified treatment of laser control of selective preparation of enantiomers, we considered dynamic chirality control of H_2POSH in their racemate as a model.