Abstract
We present an easy, efficient, and fast method to generate arbitrary linear combinations of light orbital angular-momentum eigenstates $\ensuremath{\ell}=\ifmmode\pm\else\textpm\fi{}2$ starting from a linearly polarized TEM${}_{00}$ laser beam. The method exploits the spin-to-orbital angular-momentum conversion capability of a liquid-crystal-based $q$ plate and a Dove prism inserted into a Sagnac polarizing interferometer. The nominal generation efficiency is $100%$, being limited only by reflection and scattering losses in the optical components. When closed paths are followed on the polarization Poincar\'e sphere of the input beam, the associated Pancharatnam geometric phase is transferred unchanged to the orbital angular momentum state of the output beam.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
