Photodetection element, information terminal device, communication system, and method for manufacturing a photodetection element

Abstract

A photodetection element that concentrates irradiated light into a narrow area to suppress loss of light energy and perform efficient photodetection. The photodetection element includes a lens, a magnetic element including a first ferromagnetic layer, a second ferromagnetic layer, and a spacer layer sandwiched between the first ferromagnetic layer and the second ferromagnetic layer, and a high refractive index layer disposed between the lens and the magnetic element and having a refractive index larger than that of the lens, wherein light that passes through the lens and the high refractive index layer is irradiated onto the magnetic element.

Dependencies are inferred from the claim text.