Patent ID: 6614821
Filing Date: 2003-09-02
Classification: B82Y,H01S

Abstract:
A laser diode, comprising:a substrate having a first conductivity type; a first cladding layer of said first conductivity type provided over said substrate, said first cladding layer having a lattice constant larger than that of GaAs and smaller than that of GaP; an active layer formed over said first cladding layer; a second cladding layer of a second conductivity type provided over said active layer, said second cladding layer having said lattice constant; a ridge-stripe region formed in said second cladding layer; and a pair of current-blocking regions of said first conductivity type respectively provided over said second cladding layer at both lateral sides of said ridge-stripe region; each of said current-blocking regions having a composition represented as (Alx1Ga1âˆ’x1)y1In1âˆ’y1Asz1P1âˆ’z1 (0&lE;x1&lE;1, 0&lE;y1&lE;1, 01&lE;1).