Patent ID: 7907653

Claim:
A surface emitting semiconductor laser comprising: a substrate; a lower distributed Bragg reflector mirror formed on the substrate with a multilayer semiconductor film; a lower cladding layer formed on the lower distributed Bragg reflector mirror; a lower contact layer formed on the lower cladding layer; an active layer formed on the lower contact layer; a current constricting layer formed on the active layer with a predetermined aperture diameter; an upper cladding layer formed on the current constricting layer; an upper contact layer formed on the upper cladding layer; a phase adjusting layer formed on the upper contact layer with a predetermined diameter; and an upper distributed Bragg reflector mirror formed on the phase adjusting layer, wherein the predetermined aperture diameter of the current constricting layer and the predetermined diameter of the phase adjusting layer satisfy X+1.9λ≦Y≦X+5.0λ wherein X is the aperture diameter of the current constricting layer in micrometers, Y is the diameter of the phase adjusting layer in micrometers, and λ is an oscillation wavelength of the surface emitting semiconductor laser in micrometers.