LASER LIGHT SOURCE MODULE

摘要

A laser light source module is provided with a heat sink (3) which is formed of a material superior in thermal conductivity and is mounted on a stem (1), a submount substrate (4) which is formed of a material superior in insulation property and is mounted on the heat sink (3), a first lead frame (5) which is superior in electrical conductivity and thermal conductivity, is formed of a material having the almost same coefficient of linear expansion as a semiconductor laser array (7), is mounted on the submount substrate (4), mounts the semiconductor laser array (7) and constitutes a feed line of the semiconductor laser array (7), a second lead frame (6) which is formed of a material superior in electrical conductivity and thermal conductivity, is arranged on the submount substrate (4) with the first lead frame (5) and constitutes a feed line of the semiconductor laser array (7), and a wire (8) which electrically connects the semiconductor laser array (7) and the second lead frame (6).