Patent ID: 6654398
Filing Date: 2003-11-25
Classification: H01S

Abstract:
A semiconductor laser diode comprising:a p-type electrode; a p-type material layer in functional contact with said p-type electrode; an active layer in functional contact with said p-type material layer; an n-type material layer in functional contact with said active layer; an n-type electrode in functional contact with said n-type material layer; and a carrier inflow channel width controller is located on the p-type material layer and not in contact the p-type electrode for controlling the width of a path of carriers flowing from the p-type electrode into the active layer, wherein said carrier inflow channel width controller includes a first carrier inflow channel width controller to which a bias is applied to control a width of a channel for electrically charged carriers entering said active region; wherein said p-type material layer, said active layer and said n-type material layer are for lasing between the p-type electrode and the n-type electrode, and wherein the p-type electrode restrictively contacts the p-type material layer.