We propose to use femtosecond laser direct writing technique to realise dielectric optical elements from photo-resist materials for the generation of structured light from purely spin-orbital conversion transformations. This is illustrated by the fabrication and characterisation of spin-orbital optical angular momentum couplers generating optical vortices of topological charge from 1 to 20. The elements achieved using this techniques also were demonstrated its capabilities to working in the whole visible range with efficiency up to 85%. We also firstly demonstrated the abilities to combine the dynamic phase and geometric phase using the 3D fabrication capability of laser direct writing to create elements that generate different topological charges of optical vortices simultaneously with the shared aperture.
Conference Presentations are recordings of oral presentations given at SPIE conferences and published as part of the proceedings. They include the speaker's narration with video of the slides and animations. Most include full-text papers. Interactive, searchable transcripts and closed captioning are now available for 2018 presentations, with transcripts for prior recordings added daily.
Search our growing collection of more than 16,000 conference presentations, including many plenaries and keynotes.