| Proj No. | A2157-251 |
| Title | Optical Metasurface based Polarization Rotators and Waveplates |
| Summary | The polarization state of light is determined by the orientation of its oscillating electric field and is crucial for any photonic system. Polarization-controlling elements (for example, quarter waveplates and polarization rotators) are hence key components for many photonic applications, such as optical imaging, optical communication and sensing. In modern optics, polarization rotation, or the rotation of transmitted linearly polarized light, is extremely important. A common way rotate polarization is to use optically active materials that respond differently to left circularly polarized and right circularly polarized wave. Nevertheless, conventional polarization rotating devices are typically limited by a large footprint and low efficiency since naturally occurring optical activity is typically weak, therefore making them unsuitable for integration into nanophotonic systems. Artificially engineered materials or metamaterials (and their two-dimensional counterparts known as metasurfaces), represent a potential solution to these issues. Metasurfaces are ultra-thin optical scatterers that can manipulate the amplitude and phase of the light scattered from the surface. Due to their exceptional abilities to control light–matter interactions at the sub-wavelength scale, metasurfaces have accelerated the development of ultra-thin flat optical components for controlling polarization states of light. In this project, we will study the opportunities and challenges towards achieving efficient and miniaturized metasurface-based polarization rotators and quarter waveplates. |
| Supervisor | Ast/P Matthew Foreman (Loc:S1 > S1 B1C > S1 B1C 77, Ext: ?) |
| Co-Supervisor | - |
| RI Co-Supervisor | - |
| Lab | Photonics I (Loc: S1-B3a-08) |
| Single/Group: | Single |
| Area: | Microelectronics and Biomedical Electronics |
| ISP/RI/SMP/SCP?: |