Optical orbital angular momentum: twisted light and chirality

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Abstract

The question of how the orbital angular momentum of structured light might engage with chiral matter is a topic of resurgent interest. By taking account of electric quadrupole transition moments, it is shown that the handedness of the beam can indeed be exhibited in local chiral effects, being dependent on the sign of the topological charge. In the specific case of absorption, a significant interplay of wavefront structure and polarization is resolved, and clear differences in behavior are identified for systems possessing a degree of orientational order and for those that are randomly oriented.
Original languageEnglish
Pages (from-to)435-438
Number of pages4
JournalOptics Letters
Volume43
Issue number3
Early online date21 Dec 2017
DOIs
Publication statusPublished - 22 Jan 2018

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