Vertical external cavity surface emitting laser with pump beam reflector

摘要

The present invention is the absorption of the pump beam by the active layer by using a recycle pump beam pump beam reflecting layer an external resonator type of increased rear surface light emitting laser pumping method is disclosed. A surface emitting laser according to the invention the active layer for emitting the signal light having a predetermined wavelength; As opposed spaced apart top and bottom surfaces of the active layer, part of the signal light generated from the active layer and is output to the outside by transmitting and some external mirror for reflecting the active layer; To be in contact with the lower surface of the active layer, the first reflection layer for reflecting the signal light generated from the active layer to the external mirror; Pump laser emitting active layer toward the lower surface of the pump beam for exciting the active layer; And to be in contact with the upper surface of the active layer, the active layer in the active layer is passed through the pump beam is such that the second reflective layer for reflecting resorption; characterized in that it comprises a