Surface-emitting laser

Abstract

To provide a surface-emitting laser with a high degree of freedom in setting an effective refractive index distribution in an in-plane direction of a light-trapping structure. A surface-emitting laser according to the present technique includes a resonator including: first and second reflecting structures; and an active layer arranged between the first and second reflecting structures, wherein the resonator includes, between a surface of the first reflecting structure on an opposite side to a side of the active layer and the active layer and/or between a surface of the second reflecting structure on an opposite side to a side of the active layer and the active layer, a metasurface for generating in an in-plane direction an effective refractive index distribution that traps light. With the surface-emitting laser according to the present technique, a surface-emitting laser with a high degree of freedom in setting an effective refractive index distribution in an in-plane direction of a light-trapping structure can be provided.

Dependencies are inferred from the claim text.