SEMICONDUCTOR LASER OR LIGHT AMPLIFIER

摘要

17 Semiconductor device for producing or amplifying electromagnetic radiation and method of manufacturing same. Semiconductor device for producing or amplifying electromagnetic radiation, more particularly a semiconductor laser, having a substrate 1 which has a mesashaped raised portion 3. On either side of the mesa 3 there is located a blocking layer 14 of a conductivity type opposite to that of the substrate. On the blocking layer 14 are formed a first passive layer of the same conductivity type as the substrate, an active layer 8 and a second passive layer 9 of a conductivity type opposite to that of the substrate 1. According to the invention, the blocking layer 14 extends also over the mesa 3, which is connected by diffusion from at least the first passive layer 6 to the blocking layer. Figure 1.