Search for Hermite-Gauss mode rotation in cholesteric liquid crystals

W. Löffler, M. P. Van Exter, G. W. 't Hooft, G. Nienhuis, D. J. Broer, J. P. Woerdman

Research output: Contribution to journalArticleAcademicpeer-review

5 Citations (Scopus)
46 Downloads (Pure)

Abstract

In theory, there are analogous transformations of light's spin and orbital angular momentum [Allen and Padgett, J. Mod. Opt. 54, 487 (2007)]; however, none have been observed experimentally yet. In particular, it is unknown if there exists for the orbital angular momentum of light an effect analogous to the spin angular momentum-based optical rotation; this would manifest itself as a rotation of the corresponding Hermite-Gauss mode. Here we report an experimental search for this effect in a cholesteric liquid crystal polymer, using strongly focussed, spin-orbit coupled light. We find that the relative phase velocities of the orbital modes constituting the Hermite-Gauss mode agree to within 10 -5.

Original languageEnglish
Pages (from-to)12978-12983
Number of pages6
JournalOptics Express
Volume19
Issue number14
DOIs
Publication statusPublished - 4 Jul 2011

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