UN DISPOSITIVO DE LASER SEMICONDUCTOR

摘要

A semiconductor laser device includes a support having a substantially annular assembly block of a metal having a good thermal conductivity, which assembly block includes positioning means on its outer circumference for accurately locating the optical axis of said laser element and a sector-shaped supporting part which extends towards the center line of the block and which has a connection and mounting face for a laser element extending through the center line and accurately located with respect to the positioning means. A base includes mutually-insulated electrical conductors and a photodiode which is secured on the side of the assembly block remote from the supporting part, and a cap having a light-transmitting window is secured to the assembly block so as to form a hermetic envelope.