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Tailoring the Optical Dipole Force for Molecules by Field-Induced Alignment

Purcell, SM; Barker, PF; (2009) Tailoring the Optical Dipole Force for Molecules by Field-Induced Alignment. Physical Review Letters , 103 (15) , Article 153001. 10.1103/PhysRevLett.103.153001. Green open access

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Abstract

We report on the ability to tailor the optical dipole force for molecules by tuning their effective polarizability with strong field alignment using polarized fields. We have measured a difference of 20% in the dipole force on cold CS2 molecules when changing from linear to near-circular polarization using peak field intensities of 5.7×1011  W cm-2. A variation in the focal length with laser polarization of a molecular-optical lens formed by a single focused laser beam was also measured. This provides a new way of modifying this force for many molecules.

Type: Article
Title: Tailoring the Optical Dipole Force for Molecules by Field-Induced Alignment
Open access status: An open access version is available from UCL Discovery
DOI: 10.1103/PhysRevLett.103.153001
Publisher version: http://dx.doi.org/10.1103/PhysRevLett.103.153001
Language: English
Additional information: © 2009 The American Physical Society
Keywords: optical force
UCL classification: UCL
UCL > Provost and Vice Provost Offices
UCL > Provost and Vice Provost Offices > UCL BEAMS
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences > Dept of Physics and Astronomy
URI: https://discovery.ucl.ac.uk/id/eprint/127986
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