A q-plate is a flat optical element based on geometric-phase metasurfaces that converts the polarization state of light into orbital angular momentum, enabling the generation of optical vortex and vector beams. q-plates are key enabling components for structured light exploitation, from high-resolution microscopy to quantum technologies and next-generation optical communication systems.
MetaPhoX designs and manufactures dielectric metasurface q-plates for the efficient generation and manipulation of structured light. By exploiting geometric-phase engineering, our devices perform high-efficiency vortex generation in an ultra-thin optical element, replacing bulky conventional optics with compact, high-performance flat components.
Our q-plates are designed for applications in quantum technologies, optical communications, beam shaping, integrated photonics and advanced optical instrumentation.
Standard products
MetaPhoX currently offers standard silicon dielectric q-plates with the following specifications:
| Substrate diameter | 1 inch (2.54 cm) |
| Clear aperture | 20 mm |
| Material | Silicon, ARC on the back |
| Operating wavelength | 1310 nm, 1550 nm |
| Topological charge | |
| Fabrication | EBL + Nanoimprinting |
| Packaging | Bare wafer or mounted |
Custom products
Custom q-plates can be designed according to customer specifications, including:
| Operating wavelength | From 1200nm to 1700 nm |
| Clear aperture | Customizable, 20 mm |
| Topological charge | Custom, |
| Polarization engineering | Custom |
If larger lenses are needed, please check our large metalenses section, while if you are interested in our manufacturing and technology platform, check this link.