Method of manufacturing laser light source

A method of manufacturing a laser light source, the method comprising:

• providing a submount having a principal surface, wherein the submount comprises a pair of lens supports, each including an end surface;
• fixing a laser diode chip to the principal surface of the submount, the laser diode chip having an emission end surface, wherein the end surfaces of the pair of lens supports are located at opposite sides with respect to the emission end surface of the laser diode chip;
• providing a lens;
• connecting end surfaces of the pair of lens supports of the submount with a bonding surface of the lens via an inorganic bonding member;
• after the step of fixing the laser diode chip to the principal surface, heating the submount;
• and
• heating the inorganic bonding member through laser irradiation.

A method of manufacturing a laser light source, the method comprising:

• providing a submount having a principal surface on which a laser diode chip having an emission end surface is to be fixed, wherein the submount comprises a pair of lens supports, each including an end surface, wherein the end surfaces of the pair of lens supports are located at opposite sides with respect to the emission end surface of the laser diode chip;
• providing a lens having a bonding surface;
• performing adjustment such that end surfaces of the pair of lens supports of the submount are parallel to a reference plane;
• disposing a metal film on the bonding surface of the lens;
• performing adjustment such that the bonding surface of the lens is parallel to the reference plane by performing steps comprising:
• emitting laser light onto the metal film, and
• based on the laser light having been reflected at the metal film, reducing an inclination of the bonding surface of the lens with respect to the reference plane;
• and
• while maintaining the end surfaces of the pair of lens supports and the bonding surface of the lens so as to be parallel to the reference plane, bonding the end surfaces of the pair of lens supports with the bonding surface of the lens using an inorganic bonding member.