Abstract
We present the design, fabrication and optical characterization of compact phase-only diffractive optical elements (DOE) for the (de)multiplexing of beams carrying orbital angular momentum (OAM) of light, engineered for integration into next-generation OAM-based optical platforms. Samples have been fabricated with high-resolution electron-beam lithography on polymethylmethacrylate (PMMA) resist layer spun over a glass substrate and the high quality has been inspected with atomic force microscopy (AFM) and scanning electron microscopy (SEM). Various designs are presented for the sorting of optical vortices differing in either OAM content or beam size, with several steering geometries in far-field. The optical characterization has been performed at the selected wavelength λ=632.8 nm in terms of channel efficiency and inter-channel cross-talk, exhibiting remarkable optical performance.
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.
