Patent ID: 6562693
Filing Date: 2003-05-13
Classification: H01L,H01S

Abstract:
A wire bonding method for a semiconductor laser device comprising a stem provided with a plurality of lead pins; a sub-mount that is mounted on the stem and has a surface formed integrally with a monitoring photodiode; and two semiconductor laser elements that are die-bonded onto the sub-mount and have emission light monitored by the monitoring photodiode, the method comprising:a first step for retaining the stem so that an axis of a capillary for guiding a metal wire becomes perpendicular to at least one first bonding surface of the two semiconductor laser elements and the monitoring photodiode and bonding one end of the metal wire to the first bonding surface; and a second step for turning the stem so that the axis of the capillary becomes perpendicular to a second bonding surface of the lead pin approximately perpendicular to the first bonding surface around an axis perpendicular to the metal wire after performing bonding of one end of the metal wire to the first bonding surface and bonding the other end of the metal wire to the second bonding surface.