Abstract

In order to shape an Infrared (IR) beam, a number of optical components have to be used. These include a IR source on the first place, a filter to control the spectrum, a polarizer and a retardation plate to control the polarization state and a lens to collimate the beam. Each component is bulky and has a transmission factor smaller than one. It is thus difficult to envision a lighting system within a micrometer thin device that could fit in any handheld device. Such an achievement can be done using light emitting metasurfaces.

© 2023 IEEE