Patent ID: 7402447
Filing Date: 2008-07-22
Classification: B82Y,H01S

Abstract:
1. A method for fabricating a semiconductor laser device, the method comprising the steps of: (a) successively depositing, on a semiconductor substrate, an active layer made of a compound semiconductor containing phosphorus and a guide layer made of a compound semiconductor; (b) after the step (a), depositing, on the substrate, a dopant diffusion preventing layer made of a compound semiconductor containing arsenic; and (c) after the step (b), depositing, on the substrate, a first clad layer made of a compound semiconductor containing a dopant; (d) after the step (c), depositing, on the substrate, a current block layer made of a compound semiconductor; (e) forming an opening configured as a stripe in the current block layer; and (f) depositing, on the substrate, a second clad layer made of a compound semiconductor containing a dopant.