Laser optical separation of chiral molecules

Bradshaw, David S. and Andrews, David L. (2015) Laser optical separation of chiral molecules. Optics Letters, 40 (4). pp. 677-680. ISSN 0146-9592

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Abstract

The optical trapping of molecules with an off-resonant laser beam involves a forward-Rayleigh scattering mechanism. It is shown that discriminatory effects arise on irradiating chiral molecules with circularly polarized light; the complete representation requires ensemble-weighted averaging to account for the influence of the trapping beam on the distribution of molecular orientations. Results of general application enable comparisons to be drawn between the results for two limits of the input laser intensity. It emerges that, in a racemic mixture, there is a differential driving force whose effect, at high laser intensities, is to produce differing local concentrations of the two enantiomers.

Item Type: Article
Faculty \ School: Faculty of Science > School of Chemistry
Depositing User: Pure Connector
Date Deposited: 16 Feb 2015 12:16
Last Modified: 17 Sep 2020 23:57
URI: https://ueaeprints.uea.ac.uk/id/eprint/52243
DOI: 10.1364/OL.40.000677

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