A semiconductor laser includes a first conductivity type semiconductor substrate having a gain region and a spot size changing region adjacent each other; a first conductivity type lower cladding layer disposed on the substrate; an active layer disposed on the lower cladding layer and having a thickness...http://www.google.fr/patents/US6018539?utm_source=gb-gplus-shareBrevet US6018539 - Semiconductor laser and method of fabricating semiconductor laser
Semiconductor laser and method of fabricating semiconductor laser
