Simulating strong field control of axial chirality using optimal control theory

摘要

We propose a strong-field based method to control the chirality of molecules that exhibit torsion, illustrating the possibility of converting a racemate into a pure enantiomer at elevated temperatures. Optimal control theory is applied to design a laser pulse that will maximize the enantiomeric ratio achieved, considering both the case of a fixed, linear polarization and the case of a tunable polarization. Our simulations show the possibility of converting 99% and 99.5% of the population into a desired enantiomer for the fixed and tunable polarization solutions, respectively, deriving interesting insights regarding the conversion dynamics from the optimized pulse shape. Finally, we discuss several potential applications of the proposed approach, including a study of time-resolved racemization and a chiral switch.View full textDownload full textKeywordsoptimal control, strong field control, axial chirality, molecular torsionRelated var addthis_config = { ui_cobrand: "Taylor & Francis Online", services_compact: "citeulike,netvibes,twitter,technorati,delicious,linkedin,facebook,stumbleupon,digg,google,more", pubid: "ra-4dff56cd6bb1830b" }; Add to shortlist Link Permalink http://dx.doi.org/10.1080/00268976.2012.695808