Patent ID: 6195380
Filing Date: 2001-02-27
Classification: B82Y,H01S

Abstract:
A laser diode for digital versatile disks or other applications comprising:a first-type GaAs substrate;a first layer of first-type AlGaInP cladding layer formed on one side of the first-type GaAs substrate;a first AlO.sub.x layer formed on the first layer of first-type AlGaInP cladding layer, in which a first opening is formed on the first AlO.sub.x layer to confine and block current flowed therethrough;a second layer of first-type AlGaInP cladding layer formed on the first AlO.sub.x layer and the first opening;a GaInP active layer with quantum wells formed on the second layer of first-type AlGaInP cladding layer;a first layer of second-type AlGaInP cladding layer formed on the GaInP active layer;a second AlO.sub.x layer formed on the first layer of second-type AlGaInP cladding layer, in which a second opening is formed on the second AlO.sub.x layer to confine and block current flowed therethrough;a second layer of second-type AlGaInP cladding layer formed on the second AlO.sub.x layer and the second opening;a second-type GaAs contact layer formed on the second layer of second-type AlGaInP cladding layer;a second electrode formed on the second-type GaAs contact layer; anda first electrode formed on the other side of the first-type GaAs substrate.