Patent ID: 7387906

Claim:
A method for manufacturing a multi-wavelength surface emitting laser comprising the steps of: forming a first surface emitting laser which emits light having a first wavelength, the forming of the first surface emitting laser including, depositing, sequentially, on a prepared substrate a first lower reflector, a first active layer and a first upper reflector, the first lower reflector formed by; depositing, alternately, two semiconductor material layers having a same type of impurity, but different refractive indices, the first upper reflector formed by; depositing, alternately, two semiconductor material layers having an opposite type of impurity to that of the first lower reflector and having different refractive indices; partially removing the first upper reflector, the first active layer, and the first lower reflection layer by etching; and forming a protection film on an outer surface of the first surface emitting laser; forming a second surface emitting laser which emits light having a second wavelength, the forming of the second surface emitting laser including, depositing, sequentially, on the substrate and the protection film, a second lower reflector, a second active layer, and a second upper reflector, the second lower reflector formed by; depositing, alternately two semiconductor material layers having a same type of impurity, but different refractive indices, the second upper reflector formed by; depositing, alternately, two semiconductor material layers having an opposite type of impurity to that of the second lower reflector and different refractive indices; removing portions of the second lower reflector, the second active layer, and the second upper reflection layer formed on the protection film by etching; and removing the protection film; forming a first upper electrode on an upper surface of the first upper reflection layer; forming a second upper electrode on an upper surface of the second upper reflection layer; and forming a lower electrode on a bottom surface of the substrate.