Experimental Observation of Resonant Chiral Modes in Free-Space Cavities

• DOI: 10.1364/cleo_fs.2024.ff3c.4
• Publication Date: 2024-09-05T17:09:17Z
• Authors: Behrooz Semnani; Mohammad Soltani; Anya Houk; Sema Kuru; Michal Bajcsy
• Keywords: Free space

We report on experimental observation of pure chiral resonant modes in a spin-preserving Fabry-Pérot cavity enabled by geometric-phase reflective metasurfaces. The cavity, stabilizing one spin light, also preserves the helicity during round propagation light.