Patent ID: 6434179
Filing Date: 2002-08-13
Classification: B82Y,H01S

Abstract:
An edge-emitting semiconductor laser chip, comprising:an optical resonator; a laser-active semiconductor structure in said optical resonator; at least two series-connected laser-active pn-junctions in said optical resonator, said at least two laser-active pn-junctions having forward directions isodirected; said at least two laser-active pn-junctions contain quantum wells for charge carrier recombination; a reverse-poled pn-junction having a forward direction directed opposite the forward direction of said at least two laser-active pn-junctions and arranged between said at least two laser-active pn-junctions, said reverse-poled pn-junction being located in semiconductor material having a larger band gap than that of the semiconductor material of said at least two laser-active pn-junctions; and said at least two laser-active pn-junctions being located in a wave-guiding zone.