Creating a broadband diffractive graphene orbital angular momentum metalens by ultrafast laser nanoprinting

https://phys.org/news/2023-10-broadband-diffractive-graphene-orbital-angular.html

"200nm... high-resolution focusing... periodically arranged 2D metasurfaces for high-quality OAM beams.... 1-step laser nanoprinting... graphene manipulates light beam's amplitude and phase  for highly flexible and accurate lens... detour phase technique and unique graphene properties independently control focusing and topological charge at same time... simple and cost-effective... optical data storage, quantum information processing, super-resolution imaging, and optical trapping and manipulation, photonic communications"

Related:

Intelligent nanophotonics: When machine learning sheds light
https://www.eurekalert.org/news-releases/1080509

Tape-Assisted Residual Layer-Free One-Step Nanoimprinting of High-Index Hybrid Polymer for Optical Loss-Suppressed Metasurfaces
https://advanced.onlinelibrary.wiley.com/doi/abs/10.1002/advs.202570061

Cavity-assisted nonlocal metasurfaces for momentum-space broadband-operational optical vortice generation with maximum efficiency approaching 80%
https://www.eurekalert.org/news-releases/1137621

Breaking the bandwidth tradeoff: Topological coupler enables broadband coupled resonator optical waveguide
https://www.eurekalert.org/news-releases/1139249