Pump laser integrated vertical external cavity surface emitting laser

摘要

Provided is a vertical external cavity surface emitting laser (VECSEL) in which a pump laser is integrated with the rest of the VECSEL as a single body. The VECSEL includes: a first active layer that has a quantum well structure and generates light with a first wavelength; a reflection layer formed on a first surface of the first active layer; an external mirror that is separated by a predetermined distance from a second surface of the first active layer, transmits a portion of light generated by the first active layer to the outside, and reflects the rest of the light generated by the first active layer to be absorbed by the first active layer; and a pump laser disposed on the reflection layer as a single body to provide light with a second wavelength which is shorter than the first wavelength to the first active layer for optical pumping.