Patent ID: 6744804
Filing Date: 2004-06-01
Classification: B82Y,G02B,H01S

Abstract:
An external cavity edge emitting laser that emits a single mode of laser light, the laser comprising:a lower cladding layer formed on a substrate; an active region formed on the lower cladding layer, a portion of the active region having a gain medium; and an upper cladding layer formed on the active region, wherein laser light is optically confined in the active region by the lower cladding layer and upper cladding layer; a first cavity bounded by a first photonic mirror having a periodic cavity structure and a second photonic mirror having a periodic cavity structure, the first cavity including the portion of the active region that has the gain medium; a second cavity bounded by the second photonic mirror and a third photonic mirror having a periodic cavity structure, wherein the first, second, and third photonic mirrors are configured to reflect a particular mode of light within the active region of the first and second cavity such that the particular mode of laser light has appreciable gain and other modes of laser light to not have appreciable gain.