[20p-A101-1~16] 3.10 Photonic structures and phenomena (formerly 3.11)

[20p-A101-5] Generation of circular polarization by standing wave modes at topological polarization singularities

〇(M2)Tomoki Honda^1,2, Taiki Yoda², Yuto Moritake¹, Masaaki Ono², Eiichi Kuramochi², Masaya Notomi^1,2,3 (1.Tokyo Tech, 2.NTT BRL, 3.NTT NPC)

Keywords:laser, Topological Photonics, photonic crystal

Although non-degenerate singularities with half-integer topological charge have been studied to be circularly polarized states, it has been difficult to achieve circularly polarized laser oscillation because they are not standing wave modes. In this study, we demonstrated the standing wave mode of the circularly polarized state by reflection measurements on a SiPhC slab with honeycomb lattice of triangular holes, which was numerically demonstrated in the previous study.