Patent ID: 7599417

Claim:
A laser pumping unit for a surface emitting semiconductor laser, the laser pumping unit comprising: a substrate; a lower distributed brag reflector (DBR) layer formed on the substrate; an active layer with a quantum well structure formed on the lower DBR layer to generate a light having a predetermined wavelength; an aperture layer formed adjacent the active layer, thereby providing an aperture; a tunnel junction layer formed on the active layer; an upper DBR layer formed on the tunnel junction layer; and a current diffusion layer formed on the upper DBR layer, wherein each of the lower DBR layer and the upper DBR layer has a multi-layered structure in which pluralities of n-type doped high refractive index semiconductor layers and n-type doped low refractive index semiconductor layers are alternately deposited, wherein the tunnel junction layer partially covers the active layer, and the edges of the tunnel junction layer are buried by the upper DBR layer, wherein a portion of each of the high refractive index semiconductor layers and the low refractive index semiconductor layers of the upper DBR layer disposed above the tunnel junction layer forms a ridge with a predetermined height, and wherein a portion of the current diffusion layer disposed above the tunnel junction layer forms a convex lens.