Semiconductor lasers and method for producing the same.

摘要

A double heterojunction semiconductor laser lasing a high output power beam of the fundamental transverse mode comprises a stripe active layer (6) which is surrounded with clad layers and which has an upper plane (11) and a lower plane (12) which are parallel to each other and sides (13,14) inclined toward the planes (11, 12), the sides (13, 14) being uneven in a longitudinal direction.