Patent ID: 6795457
Filing Date: 2004-09-21
Classification: H01S

Abstract:
A multiple wavelength surface-emitting laser device comprising:a substrate; and a plurality of surface-emitting lasers that are formed on the substrate by a continuous manufacturing process, wherein each of said plurality of surface-emitting lasers comprises: a bottom reflection layer on the substrate, that is doped with impurities of a first type and that is composed of alternating semiconductor material layers having different refractive indexes; an active layer on the bottom reflection layer; an intermediate layer that is doped with impurities of a second type on the active layer; a top electrode on the intermediate layer, said top electrode having a window through which light is emitted; and a dielectric reflection layer where dielectric materials with different refractive indexes are alternately layered on the intermediate layer and the top electrode to be dielectric layers of a thickness suitable for a resonance wavelength, and the resonance wavelength is controlled by adjusting the thickness of the dielectric layers of the dielectric reflection layer.